Document:

<PAGE>
                                                                    Exhibit 10.8

                                      LEASE

                       CALWEST INDUSTRIAL PROPERTIES, LLC,

                                    Landlord,

                                       and

                            LIMELIGHT NETWORKS, INC.,

                                     Tenant

<PAGE>

                                TABLE OF CONTENTS

<TABLE>
<CAPTION>
                                                                            PAGE
                                                                            ----
<S>                                                                         <C>
1.  USE AND RESTRICTIONS ON USE..........................................     1
2.  TERM.................................................................     1
3.  RENT.................................................................     2
4.  RENT ADJUSTMENTS.....................................................     3
5.  SECURITY DEPOSIT.....................................................     4
6.  ALTERATIONS..........................................................     4
7.  REPAIR...............................................................     5
8.  LIENS................................................................     6
9.  ASSIGNMENT AND SUBLETTING............................................     6
10. INDEMNIFICATION......................................................     7
11. INSURANCE............................................................     8
12. WAIVER OF SUBROGATION................................................     8
13. SERVICES AND UTILITIES...............................................     8
14. HOLDING OVER.........................................................     8
15. SUBORDINATION........................................................     9
16. RULES AND REGULATIONS................................................     9
17. REENTRY BY LANDLORD..................................................     9
18. DEFAULT..............................................................     9
19. REMEDIES.............................................................    10
20. TENANT'S BANKRUPTCY OR INSOLVENCY....................................    12
21. QUIET ENJOYMENT......................................................    13
22. CASUALTY.............................................................    13
23. EMINENT DOMAIN.......................................................    14
24. SALE BY LANDLORD.....................................................    14
25. ESTOPPEL CERTIFICATES................................................    14
26. SURRENDER OF PREMISES................................................    15
27. NOTICES..............................................................    15
28. TAXES PAYABLE BY TENANT..............................................    15
29. RELOCATION OF TENANT.................................................    16
30. DEFINED TERMS AND HEADINGS...........................................    16
31. TENANT'S AUTHORITY...................................................    16
32. FINANCIAL STATEMENTS AND CREDIT REPORTS..............................    16
33. COMMISSIONS..........................................................    16
34. TIME AND APPLICABLE LAW..............................................    17
35. SUCCESSORS AND ASSIGNS...............................................    17
36. ENTIRE AGREEMENT.....................................................    17
37. EXAMINATION NOT OPTION...............................................    17
</TABLE>

                                        i

<PAGE>

                                TABLE OF CONTENTS
                                   (continued)

<TABLE>
<CAPTION>
                                                                            PAGE
                                                                            ----
<S>                                                                         <C>
38. RECORDATION..........................................................    17
39. OPTION TO EXTEND.....................................................    17
40. TELECOMMUNICATIONS EQUIPMENT.........................................    17
41. LIMITATION OF LANDLORD'S LIABILITY...................................    18
</TABLE>

EXHIBIT A - FLOOR PLAN DEPICTING THE PREMISES
EXHIBIT A-1 - SITE PLAN
EXHIBIT B - BILL OF SALE
EXHIBIT C - COMMENCEMENT DATE MEMORANDUM
EXHIBIT D - RULES AND REGULATIONS
EXHIBIT E - ADDITIONAL SURRENDER CONDITIONS

                                       ii

<PAGE>

                        MULTI-TENANT INDUSTRIAL NET LEASE

                                 REFERENCE PAGES

<TABLE>
<S>                              <C>
BUILDING:                        801 S. 16TH STREET
                                 PHOENIX, AZ 85034

LANDLORD:                        CALWEST INDUSTRIAL PROPERTIES, LLC,
                                 A CALIFORNIA LIMITED LIABILITY COMPANY

LANDLORD'S ADDRESS:              C/O RREEF MANAGEMENT COMPANY
                                 4050 EAST COTTON CENTER BLVD.
                                 SUITE 14
                                 PHOENIX, AZ 85040

WIRE INSTRUCTIONS AND/OR         FILE 50050
ADDRESS FOR RENT PAYMENT:        LOS ANGELES, CA 90074-0050

LEASE REFERENCE DATE:            SEPTEMBER 7, 2005

TENANT:                          LIMELIGHT NETWORKS, INC., A DELAWARE
                                 CORPORATION

TENANT'S NOTICE ADDRESS:

   (a) As of beginning of        801 S.16TH STREET
       Term:                     PHOENIX, AZ 85034

   (b) Prior to beginning of     2220 W. 14TH ST.
       Term (if different):      TEMPE, AZ 85281

PREMISES ADDRESS:                801 S. 16TH STREET
                                 PHOENIX, AZ 85034

PREMISES RENTABLE AREA:          APPROXIMATELY 8,224 RENTABLE SQ. FT. (FOR
                                 OUTLINE OF PREMISES SEE EXHIBIT A)

USE:                             GENERAL ADMINISTRATIVE AND SALES OFFICES
                                 RELATED TO THE WAREHOUSING AND DISTRIBUTION OF
                                 CONTENT DELIVERY NETWORK FOR INTERNET
                                 DISTRIBUTION OF VIDEO, MUSIC, GAMES AND
                                 DOWNLOADS

SCHEDULED COMMENCEMENT DATE:     OCTOBER 1, 2005

TERM OF LEASE:                   APPROXIMATELY FIVE (5) YEARS, BEGINNING ON THE
                                 COMMENCEMENT DATE AND ENDING ON THE TERMINATION
                                 DATE. THE PERIOD FROM THE COMMENCEMENT DATE TO
                                 THE LAST DAY OF THE SAME MONTH IS THE
                                 "COMMENCEMENT MONTH."

TERMINATION DATE:                THE LAST DAY OF THE SIXTIETH (60TH) FULL
                                 CALENDAR MONTH AFTER (IF THE COMMENCEMENT MONTH
                                 IS NOT A FULL CALENDAR MONTH), OR FROM AND
                                 INCLUDING (IF THE COMMENCEMENT MONTH IS A FULL
                                 CALENDAR MONTH), THE COMMENCEMENT MONTH
</TABLE>

                                       iii

<PAGE>

ANNUAL RENT and MONTHLY INSTALLMENT OF
RENT (Article 3):

<TABLE>
<CAPTION>
MONTHS:            $/RSF   MONTHLY/RENT*
-------           ------   -------------
<S>               <C>      <C>
COMMENCEMENT
DATE-1/31/06      $ 0.00     $    0.00
2/1/06-9/30/06    $0.825     $6,784.80
10/1/06-9/30/07   $0..85     $6,990.40
10/1/07-9/30/08   $0.875     $7,196.00
10/1/08-9/30/09   $ 0.90     $7,401.60
10/1/09-9/30/10   $0.925     $7,607.20
</TABLE>

*    PLUS APPLICABLE SALES AND TRANSACTION PRIVILEGE TAXES

<TABLE>
<S>                              <C>
INITIAL ESTIMATED MONTHLY        $888.19, WHICH CHARGES SHALL COMMENCE TO BE
INSTALLMENT OF RENT              DUE ON FEBRUARY 1, 2006
ADJUSTMENTS (Article 3)

TENANT'S PROPORTIONATE SHARE:    9.64%

SECURITY DEPOSIT:                $7,500.00

ASSIGNMENT/SUBLETTING FEE        $750.00

SUBORDINATION FEE                $750.00
                                 (IF LANDLORD FORM IS USED, THIS FEE WILL BE
                                 WAIVED.)

REAL ESTATE BROKER DUE           LANDLORD WILL PAY A BROKERAGE FEE TO TRAMMELL
COMMISSION:                      CROW COMPANY (MARK DETMER/BO MILLS)

                                 TENANT WILL PAY A BROKERAGE FEE TO CIRCLE ROAD
                                 (DAVID BRUNNER) PER SEPARATE AGREEMENT BETWEEN
                                 TENANT AND CIRCLE ROAD

TENANT'S SIC CODE:               3648

AMORTIZATION RATE:               11%
</TABLE>

The Reference Pages information is incorporated into and made a part of the
Lease. In the event of any conflict between any Reference Pages information and
the Lease, the Lease shall control. This Lease includes Exhibits A through E,
all of which are made a part of this Lease.

LANDLORD:                               TENANT:

CALWEST INDUSTRIAL PROPERTIES, LLC,     LIMELIGHT NETWORKS, INC.,

A CALIFORNIA LIMITED LIABILITY          A DELAWARE CORPORATION
COMPANY

By: RREEF MANAGEMENT COMPANY, a
    Delaware corporation, Authorized
    Agent

By: /s/ Bret C. Borg                    By: /s/ William H. Rinehart
    ---------------------------------       ------------------------------------
Name: Bret C. Borg, CPM                 Name: William H. Rinehart
Title: District Manager                 Title: President
Dated: 9/23/05                          Dated: 9-22-05

                                       iv

<PAGE>

                                      LEASE

     By this Lease Landlord leases to Tenant and Tenant leases from Landlord the
Premises in the Building as set forth and described on the Reference Pages. The
Premises are depicted on the floor plan attached hereto as Exhibit A, and the
Building is depicted on the site plan attached hereto as Exhibit A-1. The
Reference Pages, including all terms defined thereon, are incorporated as part
of this Lease.

1. USE AND RESTRICTIONS ON USE.

     1.1 The Premises are to be used solely for the purposes set forth on the
Reference Pages. Tenant shall not do or permit anything to be done in or about
the Premises which will in any way obstruct or interfere with the rights of
other tenants or occupants of the Building or injure, annoy, or disturb them, or
allow the Premises to be used for any improper, immoral, unlawful, or
objectionable purpose, or commit any waste. Tenant shall not do, permit or
suffer in, on, or about the Premises the sale of any alcoholic liquor without
the written consent of Landlord first obtained. Tenant shall comply with all
governmental laws, ordinances and regulations applicable to the use of the
Premises and its occupancy and shall promptly comply with all governmental
orders and directions for the correction, prevention and abatement of any
violations in the Building or appurtenant land, caused or permitted by, or
resulting from the specific use by, Tenant, or in or upon, or in connection
with, the Premises, all at Tenant's sole expense. Tenant shall not do or permit
anything to be done on or about the Premises or bring or keep anything into the
Premises which will in any way increase the rate of, invalidate or prevent the
procuring of any insurance protecting against loss or damage to the Building or
any of its contents by fire or other casualty or against liability for damage to
property or injury to persons in or about the Building or any part thereof.

     1.2 Tenant shall not, and shall not direct, suffer or permit any of its
agents, contractors, employees, licensees or invitees (collectively, the "Tenant
Entities") to at any time handle, use, manufacture, store or dispose of in or
about the Premises or the Building any (collectively "Hazardous Materials")
flammables, explosives, radioactive materials, hazardous wastes or materials,
toxic wastes or materials, or other similar substances, petroleum products or
derivatives or any substance subject to regulation by or under any federal,
state and local laws and ordinances relating to the protection of the
environment or the keeping, use or disposition of environmentally hazardous
materials, substances, or wastes, presently in effect or hereafter adopted, all
amendments to any of them, and all rules and regulations issued pursuant to any
of such laws or ordinances (collectively "Environmental Laws"), nor shall Tenant
suffer or permit any Hazardous Materials to be used in any manner not fully in
compliance with all Environmental Laws, in the Premises or the Building and
appurtenant land or allow the environment to become contaminated with any
Hazardous Materials. Notwithstanding the foregoing, Tenant may handle, store,
use or dispose of products containing small quantities of Hazardous Materials
(such as aerosol cans containing insecticides, toner for copiers, paints, paint
remover and the like) to the extent customary and necessary for the use of the
Premises for general office purposes; provided that Tenant shall always handle,
store, use, and dispose of any such Hazardous Materials in a safe and lawful
manner and never allow such Hazardous Materials to contaminate the Premises,
Building and appurtenant land or the environment. Tenant shall protect, defend,
indemnify and hold each and all of the Landlord Entities (as defined in Article
30) harmless from and against any and all loss, claims, liability or costs
(including court costs and attorney's fees) incurred by reason of any actual or
asserted failure of Tenant to fully comply with all applicable Environmental
Laws, or the presence, handling, use or disposition in or from the Premises of
any Hazardous Materials by Tenant or any Tenant Entity (even though permissible
under all applicable Environmental Laws or the provisions of this Lease), or by
reason of any actual or asserted failure of Tenant to keep, observe, or perform
any provision of this Section 1.2.

     1.3 Tenant and the Tenant Entities will be entitled to the non-exclusive
use of the common areas of the Building as they exist from time to time during
the Term, including the parking facilities, subject to Landlord's rules and
regulations regarding such use. However, in no event will Tenant or the Tenant
Entities park more vehicles in the parking facilities than Tenant's
Proportionate Share of the total parking spaces available for common use. The
foregoing shall not be deemed to provide Tenant with an exclusive right to any
parking spaces or any guaranty of the availability of any particular parking
spaces or any specific number of parking spaces.

2. TERM.

     2.1 The Term of this Lease shall begin on the date ("Commencement Date")
which shall be the later of the Scheduled Commencement Date as shown on the
Reference Pages and the date that Landlord shall tender possession of the
Premises to Tenant, and shall terminate on the date as shown on the Reference
Pages ("Termination Date"), unless sooner terminated by the provisions of this
Lease. Landlord shall have no obligation to (but may do so earlier) tender
possession of the Premises to Tenant until Tenant has submitted to Landlord
checks representing the first Monthly Installment of Rent that

                                        1

<PAGE>

is due (representing the month of February, 2006), the rent adjustments due per
Article 4 below (which are due for the first month of the Term, and each month
thereafter), and the Security Deposit, together with proof satisfactory to
Landlord that Tenant has properly procured all of the insurance coverages
required of Tenant under this Lease). Landlord shall tender possession of the
Premises in "broom-swept" and clean condition, with all of the electrical,
mechanical (excluding the Leibert air conditioning units) and plumbing systems
in good working condition, the work, if any, to be performed by Landlord
pursuant to Exhibit B to this Lease substantially completed. Tenant understands
and agrees that the existing generator in the Premises shall be delivered to it
in its current "as is, where is" condition, with Tenant being responsible for
all maintenance, repair and/or replacement of the generator during the Term of
the Lease. If Tenant spends in excess of One Hundred Fifty Thousand Dollars
($150,000.00) on the maintenance, repair and/or replacement of the generator
during the sixty (60) month initial Term of the Lease, and if reasonable proof
of such expenses is delivered to Landlord at least thirty (30) days prior to
September 30, 2010, then Landlord shall execute a bill of sale as in the form
attached hereto as Exhibit B transferring all of Landlord's right, title and
interest in and to the generator to Tenant, without any warranty or
representation as to its condition. Despite any inference to the contrary which
can be drawn from the foregoing language, if an Event of Default (as defined in
Article 18 of the Lease) occurs during the Term, of the Lease, then Landlord
shall have no obligation to deliver the generator to Tenant regardless of how
much Tenant spends in connection therewith. Tenant shall deliver a punch list of
items not in good working condition completed within thirty (30) days after
Landlord tenders possession of the Premises and Landlord agrees to proceed with
due diligence to perform its obligations regarding such items. Tenant shall, at
Landlord's request, execute and deliver a memorandum agreement provided by
Landlord in the form of Exhibit C attached hereto, setting forth the actual
Commencement Date, Termination Date and, if necessary, a revised rent schedule.
Should Tenant fail to do so within thirty (30) days after Landlord's request,
the information set forth in such memorandum provided by Landlord shall be
conclusively presumed to be agreed and correct. Upon occupancy of the Premises,
Landlord shall deliver to Tenant a bill of sale as in the form attached hereto
as Exhibit B.

     2.2 Tenant agrees that in the event of the inability of Landlord to deliver
possession of the Premises on the Scheduled Commencement Date for any reason,
Landlord shall not be liable for any damage resulting from such inability, but
Tenant shall not be liable for any rent until the time when Landlord can, after
notice to Tenant, deliver possession of the Premises to Tenant. No such failure
to give possession on the Scheduled Commencement Date shall affect the other
obligations of Tenant under this Lease, except that if Landlord is unable to
deliver possession of the Premises within one hundred twenty (120) days after
the Scheduled Commencement Date (other than as a result of strikes, shortages of
materials, holdover tenancies or similar matters beyond the reasonable control
of Landlord and Tenant is notified by Landlord in writing as to such delay),
Tenant shall have the option to terminate this Lease unless said delay is as a
result of: (a) Tenant's failure to agree to plans and specifications and/or
construction cost estimates or bids; (b) Tenant's request for materials,
finishes or installations other than Landlord's standard except those, if any,
that Landlord shall have expressly agreed to furnish without extension of time
agreed by Landlord; (c) Tenant's change in any plans or specifications; or, (d)
performance or completion by a party employed by Tenant (each of the foregoing,
a "Tenant Delay"). If any delay is the result of a Tenant Delay, the
Commencement Date and the payment of rent under this Lease shall be accelerated
by the number of days of such Tenant Delay.

     2.3 In the event Landlord permits Tenant, or any agent, employee or
contractor of Tenant, to enter, use or occupy the Premises prior to the
Commencement Date, such entry, use or occupancy shall be subject to all the
provisions of this Lease other than the payment of rent, including, without
limitation, Tenant's compliance with the insurance requirements of Article 11.
Said early possession shall not advance the Termination Date.

3. RENT.

     3.1 Tenant agrees to pay to Landlord the Annual Rent in effect from time to
time by paying the Monthly Installment of Rent then in effect on or before the
first day of each full calendar month during the Term, except that the first
full month's rent (representing the charges due for the month of February, 2006)
shall be paid upon the execution of this Lease. The Monthly Installment of Rent
in effect at any time shall be one-twelfth (1/12) of the Annual Rent in effect
at such time. Rent for any period during the Term which is less than a full
month shall be a prorated portion of the Monthly Installment of Rent based upon
the number of days in such month. Said rent shall be paid to Landlord, without
deduction or offset and without notice or demand, at the Rent Payment Address,
as set forth on the Reference Pages, or to such other person or at such other
place as Landlord may from time to time designate in writing. If an Event of
Default occurs, Landlord may require by notice to Tenant that all subsequent
rent payments be made by an automatic payment from Tenant's bank account to
Landlord's account, without cost to Landlord. Tenant must implement such
automatic payment system prior to the next scheduled rent payment or within ten
(10) days after Landlord's notice, whichever is later. Unless specified in this
Lease to the contrary, all amounts and sums payable by Tenant to Landlord
pursuant to this Lease shall be deemed additional rent.

                                        2

<PAGE>

     3.2 Tenant recognizes that late payment of any rent or other sum due under
this Lease will result in administrative expense to Landlord, the extent of
which additional expense is extremely difficult and economically impractical to
ascertain. Tenant therefore agrees that if rent or any other sum is not paid
when due and payable pursuant to this Lease, a late charge shall be imposed in
an amount equal to the greater of: (a) Fifty Dollars ($50.00), or (b) six
percent (6%) of the unpaid rent or other payment. The amount of the late charge
to be paid by Tenant shall be reassessed and added to Tenant's obligation for
each successive month until paid. The provisions of this Section 3.2 in no way
relieve Tenant of the obligation to pay rent or other payments on or before the
date on which they are due, nor do the terms of this Section 3.2 in any way
affect Landlord's remedies pursuant to Article 19 of this Lease in the event
said rent or other payment is unpaid after date due.

4. RENT ADJUSTMENTS.

     4.1 For the purpose of this Article 4, the following terms are defined as
follows:

          4.1.1 LEASE YEAR: Each fiscal year (as determined by Landlord from
time to time) falling partly or wholly within the Term.

          4.1.2 EXPENSES: All costs of operation, maintenance, repair,
replacement and management of the Building (including the amount of any credits
which Landlord may grant to particular tenants of the Building in lieu of
providing any standard services or paying any standard costs described in this
Section 4.1.2 for similar tenants), as determined in accordance with generally
accepted accounting principles, including the following costs by way of
illustration, but not limitation: water and sewer charges; insurance charges of
or relating to all insurance policies and endorsements deemed by Landlord to be
reasonably necessary or desirable and relating in any manner to the protection,
preservation, or operation of the Building or any part thereof; utility costs,
including, but not limited to, the cost of heat, light, power, steam, gas; waste
disposal; the cost of janitorial services; the cost of security and alarm
services (including any central station signaling system); costs of cleaning,
repairing, replacing and maintaining the common areas, including parking and
landscaping, window cleaning costs; labor costs; costs and expenses of managing
the Building including management and/or administrative fees; air conditioning
maintenance costs; elevator maintenance fees and supplies; material costs;
equipment costs including the cost of maintenance, repair and service agreements
and rental and leasing costs; purchase costs of equipment; current rental and
leasing costs of items which would be capital items if purchased; tool costs;
licenses, permits and inspection fees; wages and salaries; employee benefits and
payroll taxes; accounting and legal fees; any sales, use or service taxes
incurred in connection therewith. In addition, Landlord shall be entitled to
recover, as additional rent (which, along with any other capital expenditures
constituting Expenses, Landlord may either include in Expenses or cause to be
billed to Tenant along with Expenses and Taxes but as a separate item), Tenant's
Proportionate Share of: (i) an allocable portion of the cost of capital
improvement items which are reasonably calculated to reduce operating expenses;
(ii) the cost of fire sprinklers and suppression systems and other life safety
systems; and (iii) other capital expenses which are required under any
governmental laws, regulations or ordinances which were not applicable to the
Building at the time it was constructed; but the costs described in this
sentence shall be amortized over the reasonable life of such expenditures in
accordance with such reasonable life and amortization schedules as shall be
determined by Landlord in accordance with generally accepted accounting
principles, with interest on the unamortized amount at one percent (1%) in
excess of the Wall Street Journal prime lending rate announced from time to
time. Expenses shall not include depreciation or amortization of the Building or
equipment in the Building except as provided herein, loan principal payments,
costs of alterations of tenants' premises, leasing commissions, interest
expenses on long-term borrowings or advertising costs.

          4.1.3 TAXES: Real estate taxes and any other taxes, charges and
assessments which are levied with respect to the Building or the land
appurtenant to the Building, or with respect to any improvements, fixtures and
equipment or other property of Landlord, real or personal, located in the
Building and used in connection with the operation of the Building and said
land, any payments to any ground lessor in reimbursement of tax payments made by
such lessor; and all fees, expenses and costs incurred by Landlord in
investigating, protesting, contesting or in any way seeking to reduce or avoid
increase in any assessments, levies or the tax rate pertaining to any Taxes to
be paid by Landlord in any Lease Year. Taxes shall not include any corporate
franchise, or estate, inheritance or net income tax, or tax imposed upon any
transfer by Landlord of its interest in this Lease or the Building or any taxes
to be paid by Tenant pursuant to Article 28.

     4.2 Tenant shall pay as additional rent for each Lease Year Tenant's
Proportionate Share of Expenses and Taxes incurred for such Lease Year.

     4.3 The annual determination of Expenses shall be made by Landlord and
shall be binding upon Landlord and Tenant, subject to the provisions of this
Section 4.3. During the Term, Tenant may review, at Tenant's sole cost and
expense, the books and records supporting such determination in an office of
Landlord, or Landlord's agent, during normal business

                                       3

<PAGE>

hours, upon giving Landlord five (5) days advance written notice within sixty
(60) days after receipt of such determination, but in no event more often than
once in any one (1) year period, subject to execution of a confidentiality
agreement acceptable to Landlord, and provided that if Tenant utilizes an
independent accountant to perform such review it shall be one of national
standing which is reasonably acceptable to Landlord, is not compensated on a
contingency basis and is also subject to such confidentiality agreement. If
Tenant fails to object to Landlord's determination of Expenses within ninety
(90) days after receipt, or if any such objection fails to state with
specificity the reason for the objection, Tenant shall be deemed to have
approved such determination and shall have no further right to object to or
contest such determination. In the event that during all or any portion of any
Lease Year or Base Year, the Building is not fully rented and occupied Landlord
shall make an appropriate adjustment in occupancy-related Expenses for such year
for the purpose of avoiding distortion of the amount of such Expenses to be
attributed to Tenant by reason of variation in total occupancy of the Building,
by employing consistent and sound accounting and management principles to
determine Expenses that would have been paid or incurred by Landlord had the
Building been at least ninety-five percent (95%) rented and occupied, and the
amount so determined shall be deemed to have been Expenses for such Lease Year.

     4.4 Prior to the actual determination thereof for a Lease Year, Landlord
may from time to time estimate Tenant's liability for Expenses and/or Taxes
under Section 4.2, Article 6 and Article 28 for the Lease Year or portion
thereof. Landlord will give Tenant written notification of the amount of such
estimate and Tenant agrees that it will pay, by increase of its Monthly
Installments of Rent due in such Lease Year, additional rent in the amount of
such estimate. Any such increased rate of Monthly Installments of Rent pursuant
to this Section 4.4 shall remain in effect until further written notification to
Tenant pursuant hereto.

     4.5 When the above mentioned actual determination of Tenant's Liability for
Expenses and/or Taxes is made for any Lease Year and when Tenant is so notified
in writing, then:

          4.5.1 If the total additional rent Tenant actually paid pursuant to
Section 4.3 on account of Expenses and/or Taxes for the Lease Year is less than
Tenant's liability for Expenses and/or Taxes, then Tenant shall pay such
deficiency to Landlord as additional rent in one lump sum within thirty (30)
days of receipt of Landlord's bill therefor; and

          4.5.2 If the total additional rent Tenant actually paid pursuant to
Section 4.3 on account of Expenses and/or Taxes for the Lease Year is more than
Tenant's Liability for Expenses and/or Taxes, then Landlord shall credit the
difference against the then next due payments to be made by Tenant under this
Article 4, or, if the Lease has terminated, refund the difference in cash.

     4.6 If the Commencement Date is other than January 1 or if the Termination
Date is other than December 31, Tenant's liability for Expenses and Taxes for
the Lease Year in which said Date occurs shall be prorated based upon a three
hundred sixty-five (365) day year.

5. SECURITY DEPOSIT. Tenant shall deposit the Security Deposit with Landlord
upon the execution of this Lease. Said sum shall be held by Landlord as security
for the faithful performance by Tenant of all the terms, covenants and
conditions of this Lease to be kept and performed by Tenant and not as an
advance rental deposit or as a measure of Landlord's damage in case of Tenant's
default. If Tenant defaults with respect to any provision of this Lease,
Landlord may use any part of the Security Deposit for the payment of any rent or
any other sum in default, or for the payment of any amount which Landlord may
spend or become obligated to spend by reason of Tenant's default, or to
compensate Landlord for any other loss or damage which Landlord may suffer by
reason of Tenant's default. If any portion is so used, Tenant shall within five
(5) days after written demand therefor, deposit with Landlord an amount
sufficient to restore the Security Deposit to its original amount and Tenant's
failure to do so shall be a material breach of this Lease. Except to such
extent, if any, as shall be required by law, Landlord shall not be required to
keep the Security Deposit separate from its general funds, and Tenant shall not
be entitled to interest on such deposit. If Tenant shall fully and faithfully
perform every provision of this Lease to be performed by it, the Security
Deposit or any balance thereof shall be returned to Tenant at such time after
termination of this Lease when Landlord shall have determined that all of
Tenant's obligations under this Lease have been fulfilled.

6. ALTERATIONS.

     6.1 Except for those, if any, specifically provided for in Exhibit B to
this Lease, Tenant shall not make or suffer to be made any alterations,
additions, or improvements, including, but not limited to, the attachment of any
fixtures or equipment in, on, or to the Premises or any part thereof or the
making of any improvements as required by Article 7, without the prior written
consent of Landlord. When applying for such consent, Tenant shall, if requested
by Landlord, furnish complete plans and specifications for such alterations,
additions and improvements. Landlord's consent shall not be

                                       4

<PAGE>

unreasonably withheld with respect to alterations which (i) are not structural
in nature, (ii) are not visible from the exterior of the Building, (iii) do not
affect or require modification of the Building's electrical, mechanical,
plumbing, HVAC or other systems, and (iv) in aggregate do not cost more than
$5.00 per rentable square foot of that portion of the Premises affected by the
alterations in question.

     6.2 In the event Landlord consents to the making of any such alteration,
addition or improvement by Tenant, the same shall be made by using either
Landlord's contractor or a contractor reasonably approved by Landlord, in either
event at Tenant's sole cost and expense. If Tenant shall employ any contractor
other than Landlord's contractor and such other contractor or any subcontractor
of such other contractor shall employ any non-union labor or supplier, Tenant
shall be responsible for and hold Landlord harmless from any and all delays,
damages and extra costs suffered by Landlord as a result of any dispute with any
labor unions concerning the wage, hours, terms or conditions of the employment
of any such labor. In any event Landlord may charge Tenant a construction
management fee not to exceed five percent (5%) of the cost of such work to cover
its overhead as it relates to such proposed work, plus third-party costs
actually incurred by Landlord in connection with the proposed work and the
design thereof, with all such amounts being due five (5) days after Landlord's
demand.

     6.3 All alterations, additions or improvements proposed by Tenant shall be
constructed in accordance with all government laws, ordinances, rules and
regulations, using Building standard materials where applicable, and Tenant
shall, prior to construction, provide the additional insurance required under
Article 11 in such case, and also all such assurances to Landlord as Landlord
shall reasonably require to assure payment of the costs thereof, including but
not limited to, notices of non-responsibility, waivers of lien, surety company
performance bonds and funded construction escrows and to protect Landlord and
the Building and appurtenant land against any loss from any mechanic's,
materialmen's or other liens. Tenant shall pay in addition to any sums due
pursuant to Article 4, any increase in real estate taxes attributable to any
such alteration, addition or improvement for so long, during the Term, as such
increase is ascertainable; at Landlord's election said sums shall be paid in the
same way as sums due under Article 4. Landlord may, as a condition to its
consent to any particular alterations or improvements, require Tenant to deposit
with Landlord the amount reasonably estimated by Landlord as sufficient to cover
the cost of removing such alterations or improvements and restoring the
Premises, to the extent required under Section 26.2

7. REPAIR.

     7.1 Landlord shall have no obligation to alter, remodel, improve, repair,
decorate or paint the Premises, except as specified in Exhibit B if attached to
this Lease and except that Landlord shall repair and maintain the structural
portions of the roof, foundation and walls of the Building. By taking possession
of the Premises, Tenant accepts them as being in good order, condition and
repair and in the condition in which Landlord is obligated to deliver them,
except as set forth in the punch list to be delivered pursuant to Section 2.1.
It is hereby understood and agreed that no representations respecting the
condition of the Premises or the Building have been made by Landlord to Tenant,
except as specifically set forth in this Lease. Landlord shall not be liable for
any failure to make any repairs or to perform any maintenance unless such
failure shall persist for an unreasonable time after written notice of the need
of such repairs or maintenance is given to Landlord by Tenant.

     7.2 Tenant shall at its own cost and expense keep and maintain all parts of
the Premises and such portion of the Building and improvements as are within the
exclusive control of Tenant in good condition, promptly making all necessary
repairs and replacements, whether ordinary or extraordinary, with materials and
workmanship of the same character, kind and quality as the original (including,
but not limited to, repair and replacement of all fixtures installed by Tenant,
water heaters serving the Premises, windows, glass and plate glass, doors,
exterior stairs, skylights, any special office entries, interior walls and
finish work, floors and floor coverings, heating and air conditioning systems
serving the Premises, electrical systems and fixtures, sprinkler systems, dock
boards, truck doors, dock bumpers, plumbing work and fixtures, and performance
of regular removal of trash and debris). Tenant as part of its obligations
hereunder shall keep the Premises in a clean and sanitary condition. Tenant
will, as far as possible keep all such parts of the Premises from deterioration
due to ordinary wear and from falling temporarily out of repair, and upon
termination of this Lease in any way Tenant will yield up the Premises to
Landlord in good condition and repair, loss by fire or other casualty excepted
(but not excepting any damage to glass). Tenant shall, at its own cost and
expense, repair any damage to the Premises or the Building resulting from and/or
caused in whole or in part by the negligence or misconduct of Tenant, its
agents, employees, contractors, invitees, or any other person entering upon the
Premises as a result of Tenant's business activities or caused by Tenant's
default hereunder.

     7.3 Except as provided in Article 22, there shall be no abatement of rent
and no liability of Landlord by reason of any injury to or interference with
Tenant's business arising from the making of any repairs, alterations or
improvements in or to any portion of the Building or the Premises or to
fixtures, appurtenances and equipment in the Building. Except to the

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<PAGE>

extent, if any, prohibited by law, Tenant waives the right to make repairs at
Landlord's expense under any law, statute or ordinance now or hereafter in
effect.

     7.4 Tenant shall, at its own cost and expense, enter into a regularly
scheduled preventive maintenance/service contract with a maintenance contractor
approved by Landlord for servicing all heating and air conditioning systems and
equipment serving the Premises (and a copy thereof shall be furnished to
Landlord). The service contract must include all services suggested by the
equipment manufacturer in the operation/maintenance manual and must become
effective within thirty (30) days of the date Tenant takes possession of the
Premises. Should Tenant fail to do so, Landlord may, upon notice to Tenant,
enter into such a maintenance/ service contract on behalf of Tenant or perform
the work and in either case, charge Tenant the cost thereof along with a
reasonable amount for Landlord's overhead.

     7.5 Landlord shall coordinate any repairs and other maintenance of any
railroad tracks serving the Building and, if Tenant uses such rail tracks,
Tenant shall reimburse Landlord or the railroad company from time to time upon
demand, as additional rent, for its share of the costs of such repair and
maintenance and for any other sums specified in any agreement to which Landlord
or Tenant is a party respecting such tracks, such costs to be borne
proportionately by all tenants in the Building using such rail tracks, based
upon the actual number of rail cars shipped and received by such tenant during
each calendar year during the Term.

8. LIENS. Tenant shall keep the Premises, the Building and appurtenant land and
Tenant's leasehold interest in the Premises free from any liens arising out of
any services, work or materials performed, furnished, or contracted for by
Tenant, or obligations incurred by Tenant. In the event that Tenant fails,
within ten (10) days following the imposition of any such lien, to either cause
the same to be released of record or provide Landlord with insurance against the
same issued by a major title insurance company or such other protection against
the same as Landlord shall accept (such failure to constitute an Event of
Default), Landlord shall have the right to cause the same to be released by such
means as it shall deem proper, including payment of the claim giving rise to
such lien. All such sums paid by Landlord and all expenses incurred by it in
connection therewith shall be payable to it by Tenant within five (5) days
Landlord's demand.

9. ASSIGNMENT AND SUBLETTING.

     9.1 Tenant shall not have the right to assign or pledge this Lease or to
sublet the whole or any part of the Premises whether voluntarily or by operation
of law, or permit the use or occupancy of the Premises by anyone other than
Tenant, and shall not make, suffer or permit such assignment, subleasing or
occupancy without the prior written consent of Landlord, such consent not to be
unreasonably withheld, and said restrictions shall be binding upon any and all
assignees of the Lease and subtenants of the Premises. In the event Tenant
desires to sublet, or permit such occupancy of, the Premises, or any portion
thereof, or assign this Lease, Tenant shall give written notice thereof to
Landlord at least sixty (60) days but no more than one hundred twenty (120) days
prior to the proposed commencement date of such subletting or assignment, which
notice shall set forth the name of the proposed subtenant or assignee, the
relevant terms of any sublease or assignment and copies of financial reports and
other relevant financial information of the proposed subtenant or assignee.

     9.2 Notwithstanding any assignment or subletting, permitted or otherwise,
Tenant shall at all times remain directly, primarily and fully responsible and
liable for the payment of the rent specified in this Lease and for compliance
with all of its other obligations under the terms, provisions and covenants of
this Lease. Upon the occurrence of an Event of Default, if the Premises or any
part of them are then assigned or sublet, Landlord, in addition to any other
remedies provided in this Lease or provided by law, may, at its option, collect
directly from such assignee or subtenant all rents due and becoming due to
Tenant under such assignment or sublease and apply such rent against any sums
due to Landlord from Tenant under this Lease, and no such collection shall be
construed to constitute a novation or release of Tenant from the further
performance of Tenant's obligations under this Lease.

     9.3 In addition to Landlord's right to approve of any subtenant or
assignee, Landlord shall have the option, in its sole discretion, in the event
of any proposed subletting or assignment, to terminate this Lease, or in the
case of a proposed subletting of less than the entire Premises, to recapture the
portion of the Premises to be sublet, as of the date the subletting or
assignment is to be effective. The option shall be exercised, if at all, by
Landlord giving Tenant written notice given by Landlord to Tenant within thirty
(30) days following Landlord's receipt of Tenant's written notice as required
above. However, if Tenant notifies Landlord, within five (5) days after receipt
of Landlord's termination notice, that Tenant is rescinding its proposed
assignment or sublease, the termination notice shall be void and the Lease shall
continue in full force and effect. If this Lease shall be terminated with
respect to the entire Premises pursuant to this Section, the Term of this Lease
shall end on the date stated in Tenant's notice as the effective date of the
sublease or assignment as if that date had been originally fixed in this Lease
for the expiration of the Term. If Landlord recaptures under this Section only a
portion of the Premises, the rent to be paid from time to time during the
unexpired Term shall abate proportionately based on the

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<PAGE>

proportion by which the approximate square footage of the remaining portion of
the Premises shall be less than that of the Premises as of the date immediately
prior to such recapture. Tenant shall, at Tenant's own cost and expense,
discharge in full any outstanding commission obligation which may be due and
owing as a result of any proposed assignment or subletting, whether or not the
Premises are recaptured pursuant to this Section 9.3 and rented by Landlord to
the proposed tenant or any other tenant.

     9.4 In the event that Tenant sells, sublets, assigns or transfers this
Lease, Tenant shall pay to Landlord as additional rent an amount equal to one
hundred percent (100%) of any Increased Rent (as defined below), less the Costs
Component (as defined below), when and as such Increased Rent is received by
Tenant. As used in this Section, "Increased Rent" shall mean the excess of (i)
all rent and other consideration which Tenant is entitled to receive by reason
of any sale, sublease, assignment or other transfer of this Lease, over (ii) the
rent otherwise payable by Tenant under this Lease at such time. For purposes of
the foregoing, any consideration received by Tenant in form other than cash
shall be valued at its fair market value as determined by Landlord in good
faith. The "Costs Component" is that amount which, if paid monthly, would fully
amortize on a straight-line basis, over the entire period for which Tenant is to
receive Increased Rent, the reasonable costs incurred by Tenant for leasing
commissions and tenant improvements in connection with such sublease, assignment
or other transfer.

     9.5 Notwithstanding any other provision hereof, it shall be considered
reasonable for Landlord to withhold its consent to any assignment of this Lease
or sublease of any portion of the Premises if at the time of either Tenant's
notice of the proposed assignment or sublease or the proposed commencement date
thereof, there shall exist any uncured default of Tenant or matter which will
become a default of Tenant with passage of time unless cured, or if the proposed
assignee or sublessee is an entity: (a) with which Landlord is already in
negotiation; (b) is already an occupant of the Building unless Landlord is
unable to provide the amount of space required by such occupant; (c) is a
governmental agency; (d) is incompatible with the character of occupancy of the
Building; (e) with which the payment for the sublease or assignment is
determined in whole or in part based upon its net income or profits; or (f)
would subject the Premises to a use which would: (i) involve increased personnel
or wear upon the Building; (ii) violate any exclusive right granted to another
tenant of the Building; (iii) require any addition to or modification of the
Premises or the Building in order to comply with building code or other
governmental requirements; or, (iv) involve a violation of Section 1.2. Tenant
expressly agrees that for the purposes of any statutory or other requirement of
reasonableness on the part of Landlord, Landlord's refusal to consent to any
assignment or sublease for any of the reasons described in this Section 9.5,
shall be conclusively deemed to be reasonable.

     9.6 Upon any request to assign or sublet, Tenant will pay to Landlord the
Assignment/Subletting Fee plus, on demand, a sum equal to all of Landlord's
costs, including reasonable attorney's fees, incurred in investigating and
considering any proposed or purported assignment or pledge of this Lease or
sublease of any of the Premises, regardless of whether Landlord shall consent
to, refuse consent, or determine that Landlord's consent is not required for,
such assignment, pledge or sublease. Any purported sale, assignment, mortgage,
transfer of this Lease or subletting which does not comply with the provisions
of this Article 9 shall be void.

     9.7 If Tenant is a corporation, limited liability company, partnership or
trust, any transfer or transfers of or change or changes within any twelve (12)
month period in the number of the outstanding voting shares of the corporation
or limited liability company, the general partnership interests in the
partnership or the identity of the persons or entities controlling the
activities of such partnership or trust resulting in the persons or entities
owning or controlling a majority of such shares, partnership interests or
activities of such partnership or trust at the beginning of such period no
longer having such ownership or control shall be regarded as equivalent to an
assignment of this Lease to the persons or entities acquiring such ownership or
control and shall be subject to all the provisions of this Article 9 to the same
extent and for all intents and purposes as though such an assignment.

10. INDEMNIFICATION. None of the Landlord Entities shall be liable and Tenant
hereby waives all claims against them for any damage to any property or any
injury to any person in or about the Premises or the Building by or from any
cause whatsoever (including without limiting the foregoing, rain or water
leakage of any character from the roof, windows, walls, basement, pipes,
plumbing works or appliances, the Building not being in good condition or
repair, gas, fire, oil, electricity or theft), except to the extent caused by or
arising from the gross negligence or willful misconduct of Landlord or its
agents, employees or contractors. Tenant shall protect, indemnify and hold the
Landlord Entities harmless from and against any and all loss, claims, liability
or costs (including court costs and attorney's fees) incurred by reason of (a)
any damage to any property (including but not limited to property of any
Landlord Entity) or any injury (including but not limited to death) to any
person occurring in, on or about the Premises or the Building to the extent that
such injury or damage shall be caused by or arise from any actual or alleged
act, neglect, fault, or omission by or of Tenant or any Tenant Entity to meet
any standards imposed by any duty with respect to the injury or damage; (b) the
conduct or management of any work or thing whatsoever done by the Tenant in or
about the Premises or from transactions of the Tenant concerning the Premises;
(c)

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<PAGE>

Tenant's failure to comply with any and all governmental laws, ordinances and
regulations applicable to the condition or use of the Premises or its occupancy;
or (d) any breach or default on the part of Tenant in the performance of any
covenant or agreement on the part of the Tenant to be performed pursuant to this
Lease. The provisions of this Article shall survive the termination of this
Lease with respect to any claims or liability accruing prior to such
termination.

11. INSURANCE.

     11.1 Tenant shall keep in force throughout the Term: (a) a Commercial
General Liability insurance policy or policies to protect the Landlord Entities
against any liability to the public or to any invitee of Tenant or a Landlord
Entity incidental to the use of or resulting from any accident occurring in or
upon the Premises with a limit of not less than $1,000,000 per occurrence and
not less than $2,000,000 in the annual aggregate, or such larger amount as
Landlord may prudently require from time to time, covering bodily injury and
property damage liability and $1,000,000 products/completed operations
aggregate; (b) Business Auto Liability covering owned, non-owned and hired
vehicles with a limit of not less than $1,000,000 per accident; (c) insurance
protecting against liability under Worker's Compensation Laws with limits at
least as required by statute; (d) Employers Liability with limits of $1,000,000
$500,000 each accident, $1,000,000 $500,000 disease policy limit, $1,000,000
$500,000 disease--each employee; (e) All Risk or Special Form coverage
protecting Tenant against loss of or damage to Tenant's alterations, additions,
improvements, carpeting, floor coverings, panelings, decorations, fixtures,
inventory and other business personal property situated in or about the Premises
to the full replacement value of the property so insured, (f) Business
Interruption Insurance for 100% of the 12 months actual loss sustained, and (g)
and (f) Excess Liability in the amount of $5,000,000 $4,000,000.

     11.2 The aforesaid policies shall (a) be provided at Tenant's expense; (b)
name the Landlord Entities as additional insureds (General Liability) and loss
payee (Property--Special Form); (c) be issued by an insurance company with a
minimum Best's rating of "A:VII" during the Term; and (d) provide that said
insurance shall not be canceled unless thirty (30) days prior written notice
(ten days for non-payment of premium) shall have been given to Landlord; a
certificate of Liability insurance on ACORD Form 25 and a certificate of
Property insurance on ACORD Form 27 shall be delivered to Landlord by Tenant
upon the Commencement Date and at least thirty (30) days prior to each renewal
of said insurance.

     11.3 Whenever Tenant shall undertake any alterations, additions or
improvements in, to or about the Premises ("Work") the aforesaid insurance
protection must extend to and include injuries to persons and damage to property
arising in connection with such Work, without limitation including liability
under any applicable structural work act, and such other insurance as Landlord
shall require; and the policies of or certificates evidencing such insurance
must be delivered to Landlord prior to the commencement of any such Work.

12. WAIVER OF SUBROGATION. So long as their respective insurers so permit,
Tenant and Landlord hereby mutually waive their respective rights of recovery
against each other for any loss insured by fire, extended coverage, All Risks or
other insurance now or hereafter existing for the benefit of the respective
party but only to the extent of the net insurance proceeds payable under such
policies. Each party shall obtain any special endorsements required by their
insurer to evidence compliance with the aforementioned waiver.

13. SERVICES AND UTILITIES. Tenant shall pay for all water, gas, heat, light,
power, telephone, sewer, sprinkler system charges and other utilities and
services used on or from the Premises, together with any taxes, penalties, and
surcharges or the like pertaining thereto and any maintenance charges for
utilities. Tenant shall furnish all electric light bulbs, tubes and ballasts,
battery packs for emergency lighting and fire extinguishers. If any such
services are not separately metered to Tenant, Tenant shall pay such proportion
of all charges jointly metered with other premises as determined by Landlord, in
its sole discretion, to be reasonable. Any such charges paid by Landlord and
assessed against Tenant shall be immediately payable to Landlord on demand and
shall be additional rent hereunder. Tenant will not, without the written consent
of Landlord, contract with a utility provider to service the Premises with any
utility, including, but not limited to, telecommunications, electricity, water,
sewer or gas, which is not previously providing such service to other tenants in
the Building. Landlord shall in no event be liable for any interruption or
failure of utility services on or to the Premises.

14. HOLDING OVER. Tenant shall pay Landlord for each day Tenant retains
possession of the Premises or part of them after termination of this Lease by
lapse of time or otherwise at the rate ("Holdover Rate") which shall be Two
Hundred Percent (200%) of the greater of (a) the amount of the Annual Rent for
the last period prior to the date of such termination plus all Rent Adjustments
under Article 4; and (b) the then market rental value of the Premises as
determined by Landlord assuming a new lease of the Premises of the then usual
duration and other terms, in either case, prorated on a daily basis, and also
pay all damages sustained by Landlord by reason of such retention. If Landlord
gives notice to Tenant of Landlord's election to such effect, such holding over
shall constitute renewal of this Lease for a period from month to month or one
(1) year, whichever shall be specified in such notice, in either case at the
Holdover Rate, but if the Landlord does not so elect, no

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<PAGE>

such, renewal shall result notwithstanding acceptance by Landlord of any sums
due hereunder after such termination; and instead, a tenancy at sufferance at
the Holdover Rate shall be deemed to have been created. In any event, no
provision of this Article 14 shall be deemed to waive Landlord's right of
reentry or any other right under this Lease or at law.

15. SUBORDINATION. Without the necessity of any additional document being
executed by Tenant for the purpose of effecting a subordination, this Lease
shall be subject and subordinate at all times to ground or underlying leases and
to the lien of any mortgages or deeds of trust now or hereafter placed on,
against or affecting the Building, Landlord's interest or estate in the
Building, or any ground or underlying lease; provided, however, that if the
lessor, mortgagee, trustee, or holder of any such mortgage or deed of trust
elects to have Tenant's interest in this Lease be superior to any such
instrument, then, by notice to Tenant, this Lease shall be deemed superior,
whether this Lease was executed before or after said instrument. Notwithstanding
the foregoing, Tenant covenants and agrees to execute and deliver within ten
(10) days of Landlord's request such further instruments evidencing such
subordination or superiority of this Lease as may be required by Landlord.

16. RULES AND REGULATIONS. Tenant shall faithfully observe and comply with all
the rules and regulations as set forth in Exhibit D to this Lease and all
reasonable and non-discriminatory modifications of and additions to them from
time to time put into effect by Landlord. Landlord shall not be responsible to
Tenant for the non-performance by any other tenant or occupant of the Building
of any such rules and regulations.

17. REENTRY BY LANDLORD.

     17.1 Landlord reserves and shall at all times have the right to re-enter
the Premises to inspect the same, to show said Premises to prospective
purchasers, mortgagees or tenants, and to alter, improve or repair the Premises
and any portion of the Building, without abatement of rent, and may for that
purpose erect, use and maintain scaffolding, pipes, conduits and other necessary
structures and open any wall, ceiling or floor in and through the Building and
Premises where reasonably required by the character of the work to be performed,
provided entrance to the Premises shall not be blocked thereby, and further
provided that the business of Tenant shall not be interfered with unreasonably.
Landlord shall have the right at any time to change the arrangement and/or
locations of entrances, or passageways, doors and doorways, and corridors,
windows, elevators, stairs, toilets or other public parts of the Building and to
change the name, number or designation by which the Building is commonly known.
In the event that Landlord damages any portion of any wall or wall covering,
ceiling, or floor or floor covering within the Premises, Landlord shall repair
or replace the damaged portion to match the original as nearly as commercially
reasonable but shall not be required to repair or replace more than the portion
actually damaged. Tenant hereby waives any claim for damages for any injury or
inconvenience to or interference with Tenant's business, any loss of occupancy
or quiet enjoyment of the Premises, and any other loss occasioned by any action
of Landlord authorized by this Article 17.

     17.2 For each of the aforesaid purposes, Landlord shall at all times have
and retain a key with which to unlock all of the doors in the Premises,
excluding Tenant's vaults and safes or special security areas (designated in
advance), and Landlord shall have the right to use any and all means which
Landlord may deem proper to open said doors in an emergency to obtain entry to
any portion of the Premises. As to any portion to which access cannot be had by
means of a key or keys in Landlord's possession, Landlord is authorized to gain
access by such means as Landlord shall elect and the cost of repairing any
damage occurring in doing so shall be borne by Tenant and paid to Landlord
within five (5) days of Landlord's demand.

18. DEFAULT.

     18.1 Except as otherwise provided in Article 20, the following events shall
be deemed to be Events of Default under this Lease:

          18.1.1 Tenant shall fail to pay when due any sum of money becoming due
to be paid to Landlord under this Lease, whether such sum be any installment of
the rent reserved by this Lease, any other amount treated as additional rent
under this Lease, or any other payment or reimbursement to Landlord required by
this Lease, whether or not treated as additional rent under this Lease, and such
failure shall continue for a period of five (5) days after written notice that
such payment was not made when due, but if any such notice shall be given, for
the twelve (12) month period commencing with the date of such notice, the
failure to pay within five (5) days after due any additional sum of money
becoming due to be paid to Landlord under this Lease during such period shall be
an Event of Default, without notice.

          18.1.2 Tenant shall fail to comply with any term, provision or
covenant of this Lease which is not provided for in another Section of this
Article and shall not cure such failure within twenty (20) days (forthwith, if
the failure involves a hazardous condition) after written notice of such failure
to Tenant provided, however, that such failure shall not be an event of default
if such failure could not reasonably be cured during such twenty (20) day
period, Tenant has commenced

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<PAGE>

the cure within such twenty (20) day period and thereafter is diligently
pursuing such cure to completion, but the total aggregate cure period shall not
exceed ninety (90) days.

          18.1.3 Tenant shall fail to vacate the Premises immediately upon
termination of this Lease, by lapse of time or otherwise, or upon termination of
Tenant's right to possession only.

          18.1.4 Tenant shall become insolvent, admit in writing its inability
to pay its debts generally as they become due, file a petition in bankruptcy or
a petition to take advantage of any insolvency statute, make an assignment for
the benefit of creditors, make a transfer in fraud of creditors, apply for or
consent to the appointment of a receiver of itself or of the whole or any
substantial part of its property, or file a petition or answer seeking
reorganization or arrangement under the federal bankruptcy laws, as now in
effect or hereafter amended, or any other applicable law or statute of the
United States or any state thereof.

          18.1.5 A court of competent jurisdiction shall enter an order,
judgment or decree adjudicating Tenant bankrupt, or appointing a receiver of
Tenant, or of the whole or any substantial part of its property, without the
consent of Tenant, or approving a petition filed against Tenant seeking
reorganization or arrangement of Tenant under the bankruptcy laws of the United
States, as now in effect or hereafter amended, or any state thereof, and such
order, judgment or decree shall not be vacated or set aside or stayed within
sixty (60) days from the date of entry thereof.

19. REMEDIES.

     19.1 Except as otherwise provided in Article 20, upon the occurrence of any
of the Events of Default described or referred to in Article 18, Landlord shall
have the option to pursue any one or more of the following remedies without any
notice or demand whatsoever, concurrently or consecutively and not
alternatively:

          19.1.1 Landlord may, at its election, terminate this Lease or
terminate Tenant's right to possession only, without terminating the Lease.

          19.1.2 Upon any termination of this Lease, whether by lapse of time or
otherwise, or upon any termination of Tenant's right to possession without
termination of the Lease, Tenant shall surrender possession and vacate the
Premises immediately, and deliver possession thereof to Landlord, and Tenant
hereby grants to Landlord full and free license to enter into and upon the
Premises in such event and to repossess Landlord of the Premises as of
Landlord's former estate and to expel or remove Tenant and any others who may be
occupying or be within the Premises and to remove Tenant's signs and other
evidence of tenancy and all other property of Tenant therefrom without being
deemed in any manner guilty of trespass, eviction or forcible entry or detainer,
and without incurring any liability for any damage resulting therefrom, Tenant
waiving any right to claim damages for such re-entry and expulsion, and without
relinquishing Landlord's right to rent or any other right given to Landlord
under this Lease or by operation of law.

          19.1.3 Upon any termination of this Lease, whether by lapse of time or
otherwise, Landlord shall be entitled to recover as damages, all rent, including
any amounts treated as additional rent under this Lease, and other sums due and
payable by Tenant on the date of termination, plus as liquidated damages and not
as a penalty, an amount equal to the sum of: (a) an amount equal to the then
present value of the rent reserved in this Lease for the residue of the stated
Term of this Lease including any amounts treated as additional rent under this
Lease and all other sums provided in this Lease to be paid by Tenant, minus the
fair rental value of the Premises for such residue; (b) the value of the time
and expense necessary to obtain a replacement tenant or tenants, and the
estimated expenses described in Section 19.1.4 relating to recovery of the
Premises, preparation for reletting and for reletting itself; and (c) the cost
of performing any other covenants which would have otherwise been performed by
Tenant.

          19.1.4 Upon any termination of Tenant's right to possession only
without termination of the Lease:

               19.1.4.1 Neither such termination of Tenant's right to possession
nor Landlord's taking and holding possession thereof as provided in Section
19.1.2 shall terminate the Lease or release Tenant, in whole or in part, from
any obligation, including Tenant's obligation to pay the rent, including any
amounts treated as additional rent, under this Lease for the full Term, and if
Landlord so elects Tenant shall continue to pay to Landlord the entire amount of
the rent as and when it becomes due, including any amounts treated as additional
rent under this Lease, for the remainder of the Term plus any other sums
provided in this Lease to be paid by Tenant for the remainder of the Term.

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               19.1.4.2 Landlord shall use commercially reasonable efforts to
relet the Premises or portions thereof to the extent required by applicable law.
Landlord and Tenant agree that nevertheless Landlord shall at most be required
to use only the same efforts Landlord then uses to lease premises in the
Building generally and that in any case that Landlord shall not be required to
give any preference or priority to the showing or leasing of the Premises or
portions thereof over any other space that Landlord may be leasing or have
available and may place a suitable prospective tenant in any such other space
regardless of when such other space becomes available and that Landlord shall
have the right to relet the Premises for a greater or lesser term than that
remaining under this Lease, the right to relet only a portion of the Premises,
or a portion of the Premises or the entire Premises as a part of a larger area,
and the right to change the character or use of the Premises. In connection with
or in preparation for any reletting, Landlord may, but shall not be required to,
make repairs, alterations and additions in or to the Premises and redecorate the
same to the extent Landlord deems necessary or desirable, and Tenant shall pay
the cost thereof, together with Landlord's expenses of reletting, including,
without limitation, any commission incurred by Landlord, within five (5) days of
Landlord's demand. Landlord shall not be required to observe any instruction
given by Tenant about any reletting or accept any tenant offered by Tenant
unless such offered tenant has a credit-worthiness acceptable to Landlord and
leases the entire Premises upon terms and conditions including a rate of rent
(after giving effect to all expenditures by Landlord for tenant improvements,
broker's commissions and other leasing costs) all no less favorable to Landlord
than as called for in this Lease, nor shall Landlord be required to make or
permit any assignment or sublease for more than the current term or which
Landlord would not be required to permit under the provisions of Article 9.

               19.1.4.3 Until such time as Landlord shall elect to terminate the
Lease and shall thereupon be entitled to recover the amounts specified in such
case in Section 19.1.3, Tenant shall pay to Landlord upon demand the full amount
of all rent, including any amounts treated as additional rent under this Lease
and other sums reserved in this Lease for the remaining Term, together with the
costs of repairs, alterations, additions, redecorating and Landlord's expenses
of reletting and the collection of the rent accruing therefrom (including
reasonable attorney's fees and broker's commissions), as the same shall then be
due or become due from time to time, less only such consideration as Landlord
may have received from any reletting of the Premises; and Tenant agrees that
Landlord may file suits from time to time to recover any sums falling due under
this Article 19 as they become due. Any proceeds of reletting by Landlord in
excess of the amount then owed by Tenant to Landlord from time to time shall be
credited against Tenant's future obligations under this Lease but shall not
otherwise be refunded to Tenant or inure to Tenant's benefit.

     19.2 Upon the occurrence of an Event of Default, Landlord may (but shall
not be obligated to) cure such default at Tenant's sole expense. Without
limiting the generality of the foregoing, Landlord may, at Landlord's option,
enter into and upon the Premises if Landlord determines in its sole discretion
that Tenant is not acting within a commercially reasonable time to maintain,
repair or replace anything for which Tenant is responsible under this Lease or
to otherwise effect compliance with its obligations under this Lease and correct
the same, without being deemed in any manner guilty of trespass, eviction or
forcible entry and detainer and without incurring any liability for any damage
or interruption of Tenant's business resulting therefrom and Tenant agrees to
reimburse Landlord within five (5) days of Landlord's demand as additional rent,
for any expenses which Landlord may incur in thus effecting compliance with
Tenant's obligations under this Lease, plus interest from the date of
expenditure by Landlord at the Wall Street Journal prime rate.

     19.3 Tenant understands and agrees that in entering into this Lease,
Landlord is relying upon receipt of all the Annual and Monthly Installments of
Rent to become due with respect to all the Premises originally leased hereunder
over the full Initial Term of this Lease for amortization, including interest at
the Amortization Rate. For purposes hereof, the "Concession Amount" shall be
defined as the aggregate of all amounts forgone or expended by Landlord as free
rent under the lease, under Exhibit B hereof for construction allowances
(excluding therefrom any amounts expended by Landlord for Landlord's Work, as
defined in Exhibit B), and for brokers' commissions payable by reason of this
Lease. Accordingly, Tenant agrees that if this Lease or Tenant's right to
possession of the Premises leased hereunder shall be terminated as of any date
("Default Termination Date") prior to the expiration of the full Initial Term
hereof by reason of a default of Tenant, there shall be due and owing to
Landlord as of the day prior to the Default Termination Date, as rent in
addition to all other amounts owed by Tenant as of such Date, the amount
("Unamortized Amount") of the Concession Amount determined as set forth below;
provided, however, that in the event that such amounts are recovered by Landlord
pursuant to any other provision of this Article 19, Landlord agrees that it
shall not attempt to recover such amounts pursuant to this Paragraph 19.3. For
the purposes hereof, the Unamortized Amount shall be determined in the same
manner as the remaining principal balance of a mortgage with interest at the
Amortization Rate payable in level payments over the same length of time as from
the effectuation of the Concession concerned to the end of the full Initial Term
of this Lease would be determined. The foregoing provisions shall also apply to
and upon any reduction of space in the Premises, as though such reduction were a
termination for Tenant's default, except that (i) the Unamortized Amount shall
be reduced by any amounts paid by Tenant to Landlord to effectuate such
reduction and (ii) the manner of application shall be that the Unamortized
Amount shall first be determined as though for a full termination as of the
Effective Date of the elimination of the portion, but then the amount so

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<PAGE>

determined shall be multiplied by the fraction of which the numerator is the
rentable square footage of the eliminated portion and the denominator is the
rentable square footage of the Premises originally leased hereunder; and the
amount thus obtained shall be the Unamortized Amount.

     19.4 If, on account of any breach or default by Tenant in Tenant's
obligations under the terms and conditions of this Lease, it shall become
necessary or appropriate for Landlord to employ or consult with an attorney or
collection agency concerning or to enforce or defend any of Landlord's rights or
remedies arising under this Lease or to collect any sums due from Tenant, Tenant
agrees to pay all costs and fees so incurred by Landlord, including, without
limitation, reasonable attorneys' fees and costs. TENANT EXPRESSLY WAIVES ANY
RIGHT TO: (A) TRIAL BY JURY; AND (B) SERVICE OF ANY NOTICE REQUIRED BY ANY
PRESENT OR FUTURE LAW OR ORDINANCE APPLICABLE TO LANDLORDS OR TENANTS BUT NOT
REQUIRED BY THE TERMS OF THIS LEASE.

     19.5 Pursuit of any of the foregoing remedies shall not preclude pursuit of
any of the other remedies provided in this Lease or any other remedies provided
by law (all such remedies being cumulative), nor shall pursuit of any remedy
provided in this Lease constitute a forfeiture or waiver of any rent due to
Landlord under this Lease or of any damages accruing to Landlord by reason of
the violation of any of the terms, provisions and covenants contained in this
Lease.

     19.6 No act or thing done by Landlord or its agents during the Term shall
be deemed a termination of this Lease or an acceptance of the surrender of the
Premises, and no agreement to terminate this Lease or accept a surrender of said
Premises shall be valid, unless in writing signed by Landlord. No waiver by
Landlord of any violation or breach of any of the terms, provisions and
covenants contained in this Lease shall be deemed or construed to constitute a
waiver of any other violation or breach of any of the terms, provisions and
covenants contained in this Lease. Landlord's acceptance of the payment of
rental or other payments after the occurrence of an Event of Default shall not
be construed as a waiver of such Default, unless Landlord so notifies Tenant in
writing. Forbearance by Landlord in enforcing one or more of the remedies
provided in this Lease upon an Event of Default shall not be deemed or construed
to constitute a waiver of such Default or of Landlord's right to enforce any
such remedies with respect to such Default or any subsequent Default.

     19.7 To secure the payment of all rentals and other sums of money becoming
due from Tenant under this Lease, Landlord shall have and Tenant grants to
Landlord a first lien upon the leasehold interest of Tenant under this Lease,
which lien may be enforced in equity, and a continuing security interest upon
all goods, wares, equipment, fixtures, furniture, inventory, accounts, contract
rights, chattel paper and other personal property of Tenant situated on the
Premises, and such property shall not be removed therefrom without the consent
of Landlord until all arrearages in rent as well as any and all other sums of
money then due to Landlord under this Lease shall first have been paid and
discharged. Upon the occurrence of an Event of Default, Landlord shall have, in
addition to any other remedies provided in this Lease or by law, all rights and
remedies under the Uniform Commercial Code, including without limitation the
right to sell the property described in this Section 19.7 at public or private
sale upon five (5) days' notice to Tenant. Tenant shall execute all such
financing statements and other instruments as shall be deemed necessary or
desirable in Landlord's discretion to perfect the security interest hereby
created. Any request by Tenant or its lender(s) that Landlord subordinate or
waive the lien granted herein, or Landlord's statutory lien, shall be made in
writing and shall be accompanied by a check made payable to Landlord in the
amount of the Subordination Fee, as set forth on the Reference Pages to this
Lease.

     19.8 Any and all property which may be removed from the Premises by
Landlord pursuant to the authority of this Lease or of law, to which Tenant is
or may be entitled, may be handled, removed and/or stored, as the case may be,
by or at the direction of Landlord but at the risk, cost and expense of Tenant,
and Landlord shall in no event be responsible for the value, preservation or
safekeeping thereof. Tenant shall pay to Landlord, upon demand, any and all
expenses incurred in such removal and all storage charges against such property
so long as the same shall be in Landlord's possession or under Landlord's
control. Any such property of Tenant not retaken by Tenant from storage within
thirty (30) days after removal from the Premises shall, at Landlord's option, be
deemed conveyed by Tenant to Landlord under this Lease as by a bill of sale
without further payment or credit by Landlord to Tenant.

     19.9 If more than one (1) Event of Default occurs during the Term or any
renewal thereof, Tenant's renewal options, expansion options, purchase options
and rights of first offer and/or refusal, if any are provided for in this Lease,
shall be null and void.

20. TENANT'S BANKRUPTCY OR INSOLVENCY.

     20.1 If at any time and for so long as Tenant shall be subjected to the
provisions of the United States Bankruptcy Code or other law of the United
States or any state thereof for the protection of debtors as in effect at such
time (each a "Debtor's Law"):

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<PAGE>

          20.1.1 Tenant, Tenant as debtor-in-possession, and any trustee or
receiver of Tenant's assets (each a "Tenant's Representative") shall have no
greater right to assume or assign this Lease or any interest in this Lease, or
to sublease any of the Premises than accorded to Tenant in Article 9, except to
the extent Landlord shall be required to permit such assumption, assignment or
sublease by the provisions of such Debtor's Law. Without limitation of the
generality of the foregoing, any right of any Tenant's Representative to assume
or assign this Lease or to sublease any of the Premises shall be subject to the
conditions that:

               20.1.1.1 Such Debtor's Law shall provide to Tenant's
Representative a right of assumption of this Lease which Tenant's Representative
shall have timely exercised and Tenant's Representative shall have fully cured
any default of Tenant under this Lease.

               20.1.1.2 Tenant's Representative or the proposed assignee, as the
case shall be, shall have deposited with Landlord as security for the timely
payment of rent an amount equal to the larger of: (a) three (3) months' rent and
other monetary charges accruing under this Lease; and (b) any sum specified in
Article 5; and shall have provided Landlord with adequate other assurance of the
future performance of the obligations of the Tenant under this Lease. Without
limitation, such assurances shall include, at least, in the case of assumption
of this Lease, demonstration to the satisfaction of the Landlord that Tenant's
Representative has and will continue to have sufficient unencumbered assets
after the payment of all secured obligations and administrative expenses to
assure Landlord that Tenant's Representative will have sufficient funds to
fulfill the obligations of Tenant under this Lease; and, in the case of
assignment, submission of current financial statements of the proposed assignee,
audited by an independent certified public accountant reasonably acceptable to
Landlord and showing a net worth and working capital in amounts determined by
Landlord to be sufficient to assure the future performance by such assignee of
all of the Tenant's obligations under this Lease.

               20.1.1.3 The assumption or any contemplated assignment of this
Lease or subleasing any part of the Premises, as shall be the case, will not
breach any provision in any other lease, mortgage, financing agreement or other
agreement by which Landlord is bound.

               20.1.1.4 Landlord shall have, or would have had absent the
Debtor's Law, no right under Article 9 to refuse consent to the proposed
assignment or sublease by reason of the identity or nature of the proposed
assignee or sublessee or the proposed use of the Premises concerned.

21. QUIET ENJOYMENT. Landlord represents and warrants that it has full right and
authority to enter into this Lease and that Tenant, while paying the rental and
performing its other covenants and agreements contained in this Lease, shall
peaceably and quietly have, hold and enjoy the Premises for the Term without
hindrance or molestation from Landlord subject to the terms and provisions of
this Lease. Landlord shall not be liable for any interference or disturbance by
other tenants or third persons, nor shall Tenant be released from any of the
obligations of this Lease because of such interference or disturbance.

22. CASUALTY

     22.1 IN the event the Premises or the Building are damaged by fire or other
cause and in Landlord's reasonable estimation such damage can be materially
restored within one hundred eighty (180) days, Landlord shall forthwith repair
the same and this Lease shall remain in full force and effect, except that
Tenant shall be entitled to a proportionate abatement in rent from the date of
such damage. Such abatement of rent shall be made pro rata in accordance with
the extent to which the damage and the making of such repairs shall interfere
with the use and occupancy by Tenant of the Premises from time to time. Within
forty-five (45) days from the date of such damage, Landlord shall notify Tenant,
in writing, of Landlord's reasonable estimation of the length of time within
which material restoration can be made, and Landlord's determination shall be
binding on Tenant. For purposes of this Lease, the Building or Premises shall be
deemed "materially restored" if they are in such condition as would not prevent
or materially interfere with Tenant's use of the Premises for the purpose for
which it was being used immediately before such damage.

     22.2 If such repairs cannot, in Landlord's reasonable estimation, be made
within one hundred eighty (180) days, Landlord and Tenant shall each have the
option of giving the other, at any time within ninety (90) days after such
damage, notice terminating this Lease as of the date of such damage. In the
event of the giving of such notice, this Lease shall expire and all interest of
the Tenant in the Premises shall terminate as of the date of such damage as if
such date had been originally fixed in this Lease for the expiration of the
Term. In the event that neither Landlord nor Tenant exercises its option to
terminate this Lease, then Landlord shall repair or restore such damage, this
Lease continuing in full force and effect, and the rent hereunder shall be
proportionately abated as provided in Section 22.1.

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<PAGE>

     22.3 Landlord shall not be required to repair or replace any damage or loss
by or from fire or other cause to any panelings, decorations, partitions,
additions, railings, ceilings, floor coverings, office fixtures or any other
property or improvements installed on the Premises by, or belonging to, Tenant.
Any insurance which may be carried by Landlord or Tenant against loss or damage
to the Building or Premises shall be for the sole benefit of the party carrying
such insurance and under its sole control.

     22.4 In the event that Landlord should fail to complete such repairs and
material restoration within sixty (60) days after the date estimated by Landlord
therefor as extended by this Section 22.4, Tenant may at its option and as its
sole remedy terminate this Lease by delivering written notice to Landlord,
within fifteen (15) days after the expiration of said period of time, whereupon
the Lease shall end on the date of such notice or such later date fixed in such
notice as if the date of such notice was the date originally fixed in this Lease
for the expiration of the Term; provided, however, that if construction is
delayed because of changes, deletions or additions in construction requested by
Tenant, strikes, lockouts, casualties, Acts of God, war, material or labor
shortages, government regulation or control or other causes beyond the
reasonable control of Landlord, the period for restoration, repair or rebuilding
shall be extended for the amount of time Landlord is so delayed.

     22.5 Notwithstanding anything to the contrary contained in this Article:
(a) Landlord shall not have any obligation whatsoever to repair, reconstruct, or
restore the Premises when the damages resulting from any casualty covered by the
provisions of this Article 22 occur during the last twelve (12) months of the
Term or any extension thereof, but if Landlord determines not to repair such
damages Landlord shall notify Tenant and if such damages shall render any
material portion of the Premises untenantable Tenant shall have the right to
terminate this Lease by notice to Landlord within fifteen (15) days after
receipt of Landlord's notice; and (b) in the event the holder of any
indebtedness secured by a mortgage or deed of trust covering the Premises or
Building requires that any insurance proceeds be applied to such indebtedness,
then Landlord shall have the right to terminate this Lease by delivering written
notice of termination to Tenant within fifteen (15) days after such requirement
is made by any such holder, whereupon this Lease shall end on the date of such
damage as if the date of such damage were the date originally fixed in this
Lease for the expiration of the Term.

     22.6 In the event of any damage or destruction to the Building or Premises
by any peril covered by the provisions of this Article 22, it shall be Tenant's
responsibility to properly secure the Premises and upon notice from Landlord to
remove forthwith, at its sole cost and expense, such portion of all of the
property belonging to Tenant or its licensees from such portion or all of the
Building or Premises as Landlord shall request.

23. EMINENT DOMAIN. If all or any substantial part of the Premises shall be
taken or appropriated by any public or quasi-public authority under the power of
eminent domain, or conveyance in lieu of such appropriation, either party to
this Lease shall have the right, at its option, of giving the other, at any time
within thirty (30) days after such taking, notice terminating this Lease, except
that Tenant may only terminate this Lease by reason of taking or appropriation,
if such taking or appropriation shall be so substantial as to materially
interfere with Tenant's use and occupancy of the Premises. If neither party to
this Lease shall so elect to terminate this Lease, the rental thereafter to be
paid shall be adjusted on a fair and equitable basis under the circumstances. In
addition to the rights of Landlord above, if any substantial part of the
Building shall be taken or appropriated by any public or quasi-public authority
under the power of eminent domain or conveyance in lieu thereof, and regardless
of whether the Premises or any part thereof are so taken or appropriated,
Landlord shall have the right, at its sole option, to terminate this Lease.
Landlord shall be entitled to any and all income, rent, award, or any interest
whatsoever in or upon any such sum, which may be paid or made in connection with
any such public or quasi-public use or purpose, and Tenant hereby assigns to
Landlord any interest it may have in or claim to all or any part of such sums,
other than any separate award which may be made with respect to Tenant's trade
fixtures and moving expenses; Tenant shall make no claim for the value of any
unexpired Term.

24. SALE BY LANDLORD. In event of a sale or conveyance by Landlord of the
Building, the same shall operate to release Landlord from any future liability
upon any of the covenants or conditions, expressed or implied, contained in this
Lease in favor of Tenant, and in such event Tenant agrees to look solely to the
responsibility of the successor in interest of Landlord in and to this Lease.
Except as set forth in this Article 24, this Lease shall not be affected by any
such sale and Tenant agrees to attorn to the purchaser or assignee. If any
security has been given by Tenant to secure the faithful performance of any of
the covenants of this Lease, Landlord may transfer or deliver said security, as
such, to Landlord's successor in interest and thereupon Landlord shall be
discharged from any further liability with regard to said security.

25. ESTOPPEL CERTIFICATES. Within ten (10) days following any written request
which Landlord may make from time to time, Tenant shall execute and deliver to
Landlord or mortgagee or prospective mortgagee a sworn statement certifying: (a)
the date of commencement of this Lease; (b) the fact that this Lease is
unmodified and in full force and effect (or, if there have been modifications to
this Lease, that this lease is in full force and effect, as modified, and
stating the date

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<PAGE>

and nature of such modifications); (c) the date to which the rent and other sums
payable under this Lease have been paid; (d) the fact that there are no current
defaults under this Lease by either Landlord or Tenant except as specified in
Tenant's statement; and (e) such other matters as may be requested by Landlord.
Landlord and Tenant intend that any statement delivered pursuant to this Article
25 may be relied upon by any mortgagee, beneficiary or purchaser, and Tenant
shall be liable for all loss, cost or expense resulting from the failure of any
sale or funding of any loan caused by any material misstatement contained in
such estoppel certificate. Tenant irrevocably agrees that if Tenant fails to
execute and deliver such certificate within such ten (10) day period Landlord or
Landlord's beneficiary or agent may execute and deliver such certificate on
Tenant's behalf, and that such certificate shall be fully binding on Tenant.

26. SURRENDER OF PREMISES.

     26.1 Tenant shall arrange to meet Landlord for two (2) joint inspections of
the Premises, the first to occur at least thirty (30) days (but no more than
sixty (60) days) before the last day of the Term, and the second to occur not
later than forty-eight (48) hours after Tenant has vacated the Premises. In the
event of Tenant's failure to arrange such joint inspections and/or participate
in either such inspection, Landlord's inspection at or after Tenant's vacating
the Premises shall be conclusively deemed correct for purposes of determining
Tenant's responsibility for repairs and restoration. In connection with the
condition of the Premises and the systems servicing same Tenant shall also be
responsible, at its sole cost and expense, for compliance with the terms and
conditions of Exhibit E attached hereto.

     26.2 All alterations, additions, and improvements in, on, or to the
Premises made or installed by or for Tenant, including carpeting (collectively,
"Alterations"), shall be and remain the property of Tenant during the Term. Upon
the expiration or sooner termination of the Term, all Alterations shall become a
part of the realty and shall belong to Landlord without compensation, and title
shall pass to Landlord under this Lease as by a bill of sale. At the end of the
Term or any renewal of the Term or other sooner termination of this Lease,
Tenant will peaceably deliver up to Landlord possession of the Premises,
together with all Alterations by whomsoever made, in the same conditions
received or first installed, broom clean and free of all debris, excepting only
ordinary wear and tear and damage by fire or other casualty. Notwithstanding the
foregoing, if Landlord elects by notice given to Tenant at least ten (10) days
prior to expiration of the Term, Tenant shall, at Tenant's sole cost, remove any
Alterations, including carpeting, so designated by Landlord's notice, and repair
any damage caused by such removal. Tenant must, at Tenant's sole cost, remove
upon termination of this Lease, any and all of Tenant's furniture, furnishings,
movable partitions of less than full height from floor to ceiling and other
trade fixtures and personal property (collectively, "Personalty"). Personalty
not so removed shall be deemed abandoned by the Tenant and title to the same
shall thereupon pass to Landlord under this Lease as by a bill of sale, but
Tenant shall remain responsible for the cost of removal and disposal of such
Personalty, as well as any damage caused by such removal. In lieu of requiring
Tenant to remove Alterations and Personalty and repair the Premises as
aforesaid, Landlord may, by written notice to Tenant delivered at least thirty
(30) days before the Termination Date, require Tenant to pay to Landlord, as
additional rent hereunder, the cost of such removal and repair in an amount
reasonably estimated by Landlord.

     26.3 All obligations of Tenant under this Lease not fully performed as of
the expiration or earlier termination of the Term shall survive the expiration
or earlier termination of the Term Upon the expiration or earlier termination of
the Term, Tenant shall pay to Landlord the amount, as estimated by Landlord,
necessary to repair and restore the Premises as provided in this Lease and/or to
discharge Tenant's obligation for unpaid amounts due or to become due to
Landlord. All such amounts shall be used and held by Landlord for payment of
such obligations of Tenant, with Tenant being liable for any additional costs
upon demand by Landlord, or with any excess to be returned to Tenant after all
such obligations have been determined and satisfied. Any otherwise unused
Security Deposit shall be credited against the amount payable by Tenant under
this Lease.

27. NOTICES. Any notice or document required or permitted to be delivered under
this Lease shall be addressed to the intended recipient, by fully prepaid
registered or certified United States Mail return receipt requested, or by
reputable independent contract delivery service furnishing a written record of
attempted or actual delivery, and shall be deemed to be delivered when tendered
for delivery to the addressee at its address set forth on the Reference Pages,
or at such other address as it has then last specified by written notice
delivered in accordance with this Article 27, or if to Tenant at either its
aforesaid address or its last known registered office or home of a general
partner or individual owner, whether or not actually accepted or received by the
addressee. Any such notice or document may also be personally delivered if a
receipt is signed by and received from, the individual, if any, named in
Tenant's Notice Address.

28. TAXES PAYABLE BY TENANT. In addition to rent and other charges to be paid by
Tenant under this Lease, Tenant shall reimburse to Landlord, upon demand, any
and all taxes payable by Landlord (other than net income taxes) whether or not
now customary or within the contemplation of the parties to this Lease: (a)
upon, allocable to, or measured by or on the gross or net rent payable under
this Lease, including without limitation any gross income tax or excise tax
levied by

                                       15

<PAGE>

the State, any political subdivision thereof, or the Federal Government with
respect to the receipt of such rent; (b) upon or with respect to the possession,
leasing, operation, management, maintenance, alteration, repair, use or
occupancy of the Premises or any portion thereof, including any sales, use or
service tax imposed as a result thereof; (c) upon or measured by the Tenant's
gross receipts or payroll or the value of Tenant's equipment, furniture,
fixtures and other personal property of Tenant or leasehold improvements,
alterations or additions located in the Premises; or (d) upon this transaction
or any document to which Tenant is a party creating or transferring any interest
of Tenant in this Lease or the Premises. In addition to the foregoing, Tenant
agrees to pay, before delinquency, any and all taxes levied or assessed against
Tenant and which become payable during the term hereof upon Tenant's equipment,
furniture, fixtures and other personal property of Tenant located in the
Premises.

29. RELOCATION OF TENANT. Landlord, at its sole expense, on at least sixty (60)
days prior written notice, may require Tenant to move from the Premises to other
space of comparable size and decor in order to permit Landlord to consolidate
the space leased to Tenant with other adjoining space leased or to be leased to
another tenant. In the event of any such relocation, Landlord will pay all
expenses of preparing and decorating the new premises so that they will be
substantially similar to the Premises from which Tenant is moving, and Landlord
will also pay the expense of moving Tenant's furniture and equipment to the
relocated premises. In such event this Lease and each and all of the terms and
covenants and conditions hereof shall remain in full force and effect and
thereupon be deemed applicable to such new space except that revised Reference
Pages and a revised Exhibit A shall become part of this Lease and shall reflect
the location of the new premises.

30. DEFINED TERMS AND HEADINGS. The Article headings shown in this Lease are for
convenience of reference and shall in no way define, increase, limit or describe
the scope or intent of any provision of this Lease. Any indemnification or
insurance of Landlord shall apply to and inure to the benefit of all the
following "Landlord Entities", being Landlord, Landlord's investment manager,
and the trustees, boards of directors, officers, general partners,
beneficiaries, stockholders, employees and agents of each of them. Any option
granted to Landlord shall also include or be exercisable by Landlord's trustee,
beneficiary, agents and employees, as the case may be. In any case where this
Lease is signed by more than one person, the obligations under this Lease shall
be joint and several. The terms "Tenant" and "Landlord" or any pronoun used in
place thereof shall indicate and include the masculine or feminine, the singular
or plural number, individuals, firms or corporations, and their and each of
their respective successors, executors, administrators and permitted assigns,
according to the context hereof. The term "rentable area" shall mean the
rentable area of the Premises or the Building as calculated by the Landlord on
the basis of the plans and specifications of the Building including a
proportionate share of any common areas. Tenant hereby accepts and agrees to be
bound by the figures for the rentable square footage of the Premises and
Tenant's Proportionate Share shown on the Reference Pages; however, Landlord may
adjust either or both figures if there is manifest error, addition or
subtraction to the Building or any business park or complex of which the
Building is a part, remeasurement or other circumstance reasonably justifying
adjustment. The term "Building" refers to the structure in which the Premises
are located and the common areas (parking lots, sidewalks, landscaping, etc.)
appurtenant thereto. If the Building is part of a larger complex of structures,
the term "Building" may include the entire complex, where appropriate (such as
shared Expenses or Taxes) and subject to Landlord's reasonable discretion.

31. TENANT'S AUTHORITY. If Tenant signs as a corporation, partnership, trust or
other legal entity each of the persons executing this Lease on behalf of Tenant
represents and warrants that Tenant has been and is qualified to do business in
the state in which the Building is located, that the entity has full right and
authority to enter into this Lease, and that all persons signing on behalf of
the entity were authorized to do so by appropriate actions. Tenant agrees to
deliver to Landlord, simultaneously with the delivery of this Lease, a corporate
resolution, proof of due authorization by partners, opinion of counsel or other
appropriate documentation reasonably acceptable to Landlord evidencing the due
authorization of Tenant to enter into this Lease.

32. FINANCIAL STATEMENTS AND CREDIT REPORTS. At Landlord's request, Tenant shall
deliver to Landlord a copy, certified by an officer of Tenant as being a true
and correct copy, of Tenant's most recent audited financial statement, or, if
unaudited, certified by Tenant's chief financial officer as being true, complete
and correct in all material respects. Tenant hereby authorizes Landlord to
obtain one or more credit reports on Tenant at any time, and shall execute such
further authorizations as Landlord may reasonably require in order to obtain a
credit report.

33. COMMISSIONS. Each of the parties represents and warrants to the other that
it has not dealt with any broker or finder in connection with this Lease, except
as described on the Reference Pages. Tenant agrees that it shall be solely
responsible for payment of any commission or fee due to its broker. Circle Road
(David Brunner). Landlord shall pay the commission or fee due to its broker,
Trammell Crow Company (Mark Detmer/Bo Mills).

                                       16

<PAGE>

34. TIME AND APPLICABLE LAW. Time is of the essence of this Lease and all of its
provisions. This Lease shall in all respects be governed by the laws of the
state in which the Building is located.

35. SUCCESSORS AND ASSIGNS. Subject to the provisions of Article 9, the terms,
covenants and conditions contained in this Lease shall be binding upon and inure
to the benefit of the heirs, successors, executors, administrators and assigns
of the parties to this Lease.

36. ENTIRE AGREEMENT. This Lease, together with its exhibits, contains all
agreements of the parties to this Lease and supersedes any previous
negotiations. There have been no representations made by the Landlord or any of
its representatives or understandings made between the parties other than those
set forth in this Lease and its exhibits. This Lease may not be modified except
by a written instrument duly executed by the parties to this Lease.

37. EXAMINATION NOT OPTION. Submission of this Lease shall not be deemed to be a
reservation of the Premises. Landlord shall not be bound by this Lease until it
has received a copy of this Lease duly executed by Tenant and has delivered to
Tenant a copy of this Lease duly executed by Landlord, and until such delivery
Landlord reserves the right to exhibit and lease the Premises to other
prospective tenants. Notwithstanding anything contained in this Lease to the
contrary, Landlord may withhold delivery of possession of the Premises from
Tenant until such time as Tenant has paid to Landlord any security deposit
required by Article 5, the first month's rent as set forth in Article 3 and any
sum owed pursuant to this Lease.

38. RECORDATION. Tenant shall not record or register this Lease or a short form
memorandum hereof without the prior written consent of Landlord, and then shall
pay all charges and taxes incident such recording or registration.

39. OPTION TO EXTEND. Tenant shall, provided the Lease is in full force and
effect and Tenant is not in default under any of the other terms and conditions
of the Lease at the time of notification or commencement, have three (3) options
to extend this Lease for a term of three (3) years each, for the portion of the
Premises being leased by Tenant as of the date each such extension term is to
commence, on the same terms and conditions set forth in the Lease, except as
modified by the terms, covenants and conditions as set forth below:

     a.   If Tenant elects to exercise said option, then Tenant shall provide
          Landlord with written notice no earlier than the date which is eight
          (8) months prior to the expiration of the Term of the Lease but no
          later than the date which is six (6) months prior to the expiration of
          the Term of this Lease. If Tenant fails to provide such notice, Tenant
          shall have no further or additional right to extend or renew the term
          of the Lease.

     b.   The Annual Rent and Monthly Installment in effect at the expiration of
          the Term of the Lease (as it may be extended from time to time) shall
          be increased to reflect the current fair market rental for comparable
          space in the Building and in other similar buildings in the same
          rental market as of the date the applicable extension term is to
          commence, taking into account the specific provisions of the Lease
          which will remain constant. Landlord shall advise Tenant of the new
          Annual Rent and Monthly Installment for the Premises no later than
          twenty (20) days after receipt of Tenant's written request therefor.
          Said request shall be made no earlier than thirty (30) days prior to
          the first date on which Tenant may exercise its option under this
          Paragraph. Said notification of the new Annual Rent may include a
          provision for its escalation to provide for a change in fair market
          rental between the time of notification and the commencement of the
          extension term. In no event shall the Annual Rent and Monthly
          Installment for any option period be less than the Annual Rent and
          Monthly Installment in the preceding period.

     c.   This option is not transferable; the parties hereto acknowledge and
          agree that they intend that the aforesaid option to extend this Lease
          shall be "personal" to Tenant as set forth above and that in no event
          will any assignee or sublessee have any rights to exercise the
          aforesaid option to extend.

40. TELECOMMUNICATIONS EQUIPMENT. Tenant, at its sole cost and expense, shall
have the non-exclusive right (it being understood that Landlord may grant,
extend or renew similar rights to others) to install, maintain, and from time to
time replace a satellite dish or telecommunications antennae (a "DISH") on the
roof of the Building, provided that prior to commencing any installation or
maintenance. Tenant shall (i) obtain Landlord's prior approval of the proposed
size, weight and location of the Dish and method for fastening the Dish to the
roof, (ii) such installation and/or replacement shall comply strictly with all
Laws and the conditions of any bond or warranty maintained by Landlord on the
roof, (iii) use the Dish solely for its internal use, (iv) not grant any right
to use of the Dish to any other party, and (v) obtain, at Tenant's sole cost and
expense, any necessary federal, state, and municipal permits, licenses and
approvals, and deliver copies thereof to Landlord. Landlord may supervise or
perform any roof penetration related to the installation of a Dish, and Landlord
may

                                       17

<PAGE>

charge the cost thereof to Tenant. Tenant agrees that all installation,
construction and maintenance shall be performed in a neat, responsible, and
workmanlike manner, using generally acceptable construction standards,
consistent with such reasonable requirements as shall be imposed by Landlord.
Tenant further agrees to label each cable or wire placed by Tenant in the
telecommunications pathways of the Building, with identification information as
required by Landlord. Tenant shall repair any damage to the Building caused by
Tenant's installation, maintenance, replacement, use or removal of the Dish. The
Dish shall remain the property of Tenant, and Tenant may remove the Dish at its
cost at any time during the Term. Tenant shall remove the Dish at Tenant's cost
and expense upon the expiration or termination of this Lease. Tenant agrees that
the Dish, and any wires, cables or connections relating thereto, and the
installation, maintenance and operation thereof shall in no way interfere with
the use and enjoyment of the Building, or the operation of communications
("including, without limitation, other satellite dishes) or computer devices by
Landlord or by other tenants or occupants of the Project. If such interference
shall occur, Landlord shall give Tenant written notice thereof and Tenant shall
correct the same within twenty-four (24) hours of receipt of such notice.
Landlord reserves the right to disconnect power to any Dish if Tenant fails to
correct such interference within twenty-four (24) hours after such notice.
Landlord makes no warranty or representation that the Building or any portions
thereof are suitable for the use of a Dish, it being assumed that Tenant has
satisfied itself thereof. Tenant shall protect, defend, indemnify and hold
harmless Landlord and Landlord's Agents from and against claims, damages,
liabilities, costs and expenses of every kind and nature, including attorneys'
fees, incurred by or asserted against Landlord arising out of Tenant's
installation, maintenance, replacement, use or removal of the Dish.]

39.41. LIMITATION OF LANDLORD'S LIABILITY. Redress for any claim against
Landlord under this Lease shall be limited to and enforceable only against and
to the extent of Landlord's interest in the Building. The obligations of

              [THE REMAINDER OF THIS PAGE INTENTIONALLY LEFT BLANK]

                                       18

<PAGE>

Landlord under this Lease are not intended to be and shall not be personally
binding on, nor shall any resort be had to the private properties of, any of its
or its investment manager's trustees, directors, officers, partners,
beneficiaries, members, stockholders, employees, or agents, and in no case shall
Landlord be liable to Tenant hereunder for any lost profits, damage to business,
or any form of special, indirect or consequential damages.

LANDLORD:                               TENANT:

CALWEST INDUSTRIAL PROPERTIES, LLC,     LIMELIGHT NETWORKS, INC., A DELAWARE
                                        CORPORATION
A CALIFORNIA LIMITED LIABILITY
COMPANY

By: RREEF MANAGEMENT COMPANY, a
    Delaware corporation, Authorized
    Agent

By: /s/ Bret C. Borg                    By: /s/ William H. Rinehart
    ---------------------------------       ------------------------------------
Name: Bret C. Borg, CPM                 Name: William H. Rinehart
Title: District Manager                 Title: President
Dated: 9/23/05                          Dated: 9-22-05

                                       18

<PAGE>

                  EXHIBIT A - FLOOR PLAN DEPICTING THE PREMISES

                attached to and made a part of Lease bearing the
                Lease Reference Date of September 7, 2005 between
               Calwest Industrial Properties, LLC, as Landlord and
                       Limelight Networks, Inc., as Tenant

Exhibits A is intended only to show the general layout of the Premises as of the
beginning of the Term of this Lease. It does not in any way supersede any of
Landlord's rights set forth in Article 17 with respect to arrangements and/or
locations of public parts of the Building and changes in such arrangements
and/or locations. It is not to be scaled; any measurements or distances shown
should be taken as approximate.

                              801 South 16th Street

                             Phoenix, Arizona 85034

                                8,224 Square Feet

                       (FLOOR PLAN DEPICTING THE PREMISES)

                                       A-1

<PAGE>

                             EXHIBIT A-1 - SITE PLAN

                attached to and made a part of Lease bearing the
                Lease Reference Date of September 7, 2005 between
               Calwest Industrial Properties, LLC, as Landlord and
                       Limelight Networks, Inc., as Tenant

Exhibits A-1 is intended only to show the general layout of the Premises as of
the beginning of the Term of this Lease. It does not in any way supersede any of
Landlord's rights set forth in Article 17 with respect to arrangements and/or
locations of public parts of the Building and changes in such arrangements
and/or locations. It is not to be scaled; any measurements or distances shown
should be taken as approximate.

                          SKY HARBOR - 801 SOUTH 16TH
                          Phoenix, Arizona

                            (RENDERING OF SITE PLAN)

                             801 SOUTH 16TH STREET
                             PHOENIX, ARIZONA 85034
                               8,224 SQUARE FEET

                                       A-2

<PAGE>

                            EXHIBIT B - BILL OF SALE

                ATTACHED TO AND MADE A PART OF LEASE BEARING THE
                LEASE REFERENCE DATE OF SEPTEMBER 7, 2005 BETWEEN
               CALWEST INDUSTRIAL PROPERTIES, LLC, AS LANDLORD AND
                       LIMELIGHT NETWORKS, INC., AS TENANT

                                  BILL OF SALE

     Calwest Industrial Properties, LLC ("Seller"), FOR VALUABLE CONSIDERATION,
the receipt and sufficiency of which is hereby acknowledged, does hereby grant,
sell, transfer and deliver to Limelight Networks, Inc. ("Buyer") all of its
right, title and interest in and to the following described property
(hereinafter the "Property") heretofore located at 801 S. 16th St., Phoenix, AZ:
Two (2) 30 ton Leibert air conditioning units, and the cables and racks
associated therewith.

     Seller makes no warranty and/or representation as to the condition of the
Property, that it is the lawful owner of the Property, that the Property is free
from liens, security interests and/or encumbrances, or that the Property is
suitable for Buyer's intended purposes.

     IN WITNESS WHEREOF, Seller has executed this Bill of Sale this ___________
day of _____________, 2005.

SELLER:

CALWEST INDUSTRIAL PROPERTIES, LLC,

A CALIFORNIA LIMITED LIABILITY COMPANY

By: RREEF MANAGEMENT COMPANY, a
    Delaware corporation, Authorized
    Agent

By:
    ---------------------------------
Name: Bret C. Borg, CPM
Title: District Manager

                                       B-1

<PAGE>

                                  (SAMPLE ONLY)

                    EXHIBIT C - COMMENCEMENT DATE MEMORANDUM

                ATTACHED TO AND MADE A PART OF LEASE BEARING THE
                LEASE REFERENCE DATE OF SEPTEMBER 7, 2005 BETWEEN
               CALWEST INDUSTRIAL PROPERTIES, LLC, AS LANDLORD AND
                       LIMELIGHT NETWORKS, INC., AS TENANT

                          COMMENCEMENT DATE MEMORANDUM

     THIS MEMORANDUM, made as of __________, 20__, by and between ("Landlord")
     and __________ ("Tenant").

                                    Recitals:

     A.   Landlord and Tenant are parties to that certain Lease, dated for
          reference __________, 20__ (the "Lease") for certain premises (the
          "Premises") consisting of approximately ____ square feet at the
          building commonly known as __________.

     B.   Tenant is in possession of the Premises and the Term of the Lease has
          commenced.

     C.   Landlord and Tenant desire to enter into this Memorandum
          confirming the Commencement Date, the Termination Date and other
          matters under the Lease.

     NOW, THEREFORE, Landlord and Tenant agree as follows:

     1. The actual Commencement Date is __________

     2. The actual Termination Date is __________

     3. The schedule of the Annual Rent and the Monthly Installment of Rent set
forth on the Reference Pages is deleted in its entirety, and the following is
substituted therefor:

                             [INSERT RENT SCHEDULE]

     4. Capitalized terms not defined herein shall have the same meaning as set
forth in the Lease.

     IN WITNESS WHEREOF, the parties hereto have caused this Agreement to be
executed as of the date and year first above written.

LANDLORD:                               TENANT:

By:
    ---------------------------------

By:            DO NOT SIGN              By:              DO NOT SIGN
    ---------------------------------       ------------------------------------
Name:                                   Name:
      -------------------------------         ----------------------------------
Title:                                  Title:
       ------------------------------          ---------------------------------
Dated:                                  Dated:
       ------------------------------          ---------------------------------

                                       C-1

<PAGE>

                        EXHIBIT D - RULES AND REGULATIONS

                ATTACHED TO AND MADE A PART OF LEASE BEARING THE
                LEASE REFERENCE DATE OF SEPTEMBER 7, 2005 BETWEEN
               CALWEST INDUSTRIAL PROPERTIES, LLC, AS LANDLORD AND
                       LIMELIGHT NETWORKS, INC., AS TENANT

1. No sign, placard, picture, advertisement, name or notice (collectively
referred to as "Signs") shall be installed or displayed on any part of the
outside of the Building without the prior written consent of the Landlord which
consent shall be in Landlord's sole discretion. All approved Signs shall be
printed, painted, affixed or inscribed at Tenant's expense by a person or vendor
approved by Landlord and shall be removed by Tenant at Tenant's expense upon
vacating the Premises. Landlord shall have the right to remove any Sign
installed or displayed in violation of this rule at Tenant's expense and without
notice.

2. If Landlord objects in writing to any curtains, blinds, shades or screens
attached to or hung in or used in connection with any window or door of the
Premises or Building, Tenant shall immediately discontinue such use. No awning
shall be permitted on any part of the Premises. Tenant shall not place anything
or allow anything to be placed against or near any glass partitions or doors or
windows which may appear unsightly, in the opinion of Landlord, from outside the
Premises.

3. Tenant shall not alter any lock or other access device or install a new or
additional lock or access device or bolt on any door of its Premises without the
prior written consent of Landlord. Tenant, upon the termination of its tenancy,
shall deliver to Landlord the keys or other means of access to all doors.

4. If Tenant requires telephone, data, burglar alarm or similar service, the
cost of purchasing, installing and maintaining such service shall be borne
solely by Tenant. No boring or cutting for wires will be allowed without the
prior written consent of Landlord. Landlord shall direct electricians as to
where and how telephone, data, and electrical wires are to be introduced or
installed. The location of burglar alarms, telephones, call boxes or other
office equipment affixed to the Premises shall be subject to the prior written
approval of Landlord.

5. Tenant shall not place a load upon any floor of its Premises, including
mezzanine area, if any, which exceeds the load per square foot that such floor
was designed to carry and that is allowed by law. Heavy objects shall stand on
such platforms as determined by Landlord to be necessary to properly distribute
the weight. Landlord will not be responsible for loss of or damage to any such
equipment or other property from any cause, and all damage done to the Building
by maintaining or moving such equipment or other property shall be repaired at
the expense of Tenant.

6. Tenant shall not install any radio or television antenna, satellite dish,
loudspeaker or other device on the roof or exterior walls of the Building
without Landlord's prior written consent which consent shall be in Landlord's
sole discretion.

7. Tenant shall not mark, drive nails, screw or drill into the partitions,
woodwork, plaster or drywall (except for pictures and general office uses) or in
any way deface the Premises or any part thereof. Tenant shall not affix any
floor covering to the floor of the Premises or paint or seal any floors in any
manner except as approved by Landlord. Tenant shall repair any damage resulting
from noncompliance with this rule.

8. No cooking shall be done or permitted on the Premises, except that
Underwriters' Laboratory approved microwave ovens or equipment for brewing
coffee, tea, hot chocolate and similar beverages shall be permitted, provided
that such equipment and use is in accordance with all applicable federal, state
and city laws, codes, ordinances, rules and regulations.

9. Tenant shall not use any hand trucks except those equipped with the rubber
tires and side guards, and may use such other material-handling equipment as
Landlord may approve. Tenant shall not bring any other vehicles of any kind into
the Building. Forklifts which operate on asphalt areas shall only use tires that
do not damage the asphalt.

10. Tenant shall not use the name of the Building or any photograph or other
likeness of the Building in connection with or in promoting or advertising
Tenant's business except that Tenant may include the Building name in Tenant's
address. Landlord shall have the right, exercisable without notice and without
liability to any tenant, to change the name and address of the Building.

                                      D-1

<PAGE>

11. All trash and refuse shall be contained in suitable receptacles at locations
approved by Landlord. Tenant shall not place in the trash receptacles any
personal trash or material that cannot be disposed of in the ordinary and
customary manner of removing such trash without violation of any law or
ordinance governing such disposal.

12. Tenant shall comply with all safety, fire protection and evacuation
procedures and regulations established by Landlord or any governing authority.

13. Tenant assumes all responsibility for securing and protecting its Premises
and its contents including keeping doors locked and other means of entry to the
Premises closed.

14. Tenant shall not use any method of heating or air conditioning other than
that supplied by Landlord without Landlord's prior written consent.

15. No person shall go on the roof without Landlord's permission.

16. Tenant shall not permit any animals, other than seeing-eye dogs, to be
brought or kept in or about the Premises or any common area of the property.

17. Tenant shall not permit any motor vehicles to be washed or mechanical work
or maintenance of motor vehicles to be performed on any portion of the Premises
or parking lot.

18. These Rules and Regulations are in addition to, and shall not be construed
to in any way modify or amend, in whole or in part, the terms, covenants,
agreements and conditions of any lease of any premises in the Building. Landlord
may waive any one or more of these Rules and Regulations for the benefit of any
tenant or tenants, and any such waiver by Landlord shall not be construed as a
waiver of such Rules and Regulations for any or all tenants.

19. Landlord reserves the right to make such other and reasonable rules and
regulations as in its judgment may from time to time be needed for safety and
security, for care and cleanliness of the Building and for the preservation of
good order in and about the Building. Tenant agrees to abide by all such rules
and regulations herein stated and any additional rules and regulations which are
adopted. Tenant shall be responsible for the observance of all of the foregoing
rules by Tenant's employees, agents, clients, customers, invitees and guests.

20. Any toilet rooms, toilets, urinals, wash bowls and other apparatus shall not
be used for any purpose other than that for which they were constructed and no
foreign substance of any kind whatsoever shall be thrown into them. The expense
of any breakage, stoppage or damage resulting from the violation of this rule
shall be borne by the Tenant who, or whose employees or invitees, shall have
caused it.

21. Tenant shall not permit smoking or carrying of lighted cigarettes or cigars
in areas reasonably designated by Landlord or any applicable governmental
agencies as non-smoking areas.

22. Any directory of the Building or project of which the Building is a part
("Project Area"), if provided, will be exclusively for the display of the name
and location of tenants only and Landlord reserves the right to charge for the
use thereof and to exclude any other names.

23. Canvassing, soliciting, distribution of handbills or any other written
material in the Building or Project Area is prohibited and each tenant shall
cooperate to prevent the same. No tenant shall solicit business from other
tenants or permit the sale of any goods or merchandise in the Building or
Project Area without the written consent of Landlord.

24. Any equipment belonging to Tenant which causes noise or vibration that may
be transmitted to the structure of the Building or to any space therein to such
a degree as to be objectionable to Landlord or to any tenants in the Building
shall be placed and maintained by Tenant, at Tenant's expense, on vibration
eliminators or other devices sufficient to eliminate the noise or vibration.

25. Driveways, sidewalks, halls, passages, exits, entrances and stairways
("Access Areas") shall not be obstructed by tenants or used by tenants for any
purpose other than for ingress to and egress from their respective premises.
Access areas are not for the use of the general public and Landlord shall in all
cases retain the right to control and prevent access thereto by

                                       D-2

<PAGE>

all persons whose presence, in the judgement of Landlord, shall be prejudicial
to the safety, character, reputation and interests of the Building or its
tenants.

26. Landlord reserves the right to designate the use of parking areas and
spaces. Tenant shall not park in visitor, reserved, or unauthorized parking
areas. Tenant and Tenant's guests shall park between designated parking lines
only and shall not park motor vehicles in those areas designated by Landlord for
loading and unloading. Vehicles in violation of the above shall be subject to
being towed at the vehicle owner's expense. Vehicles parked overnight without
prior written consent of the Landlord shall be deemed abandoned and shall be
subject to being towed at vehicle owner's expense. Tenant will from time to
time, upon the request of Landlord, supply Landlord with a list of license plate
numbers of vehicles owned or operated by its employees or agents.

27. No trucks, tractors or similar vehicles can be parked anywhere other than in
Tenant's own truck dock area. Tractor-trailers which must be unhooked or parked
with dolly wheels beyond the concrete loading areas must use steel plates or
wood blocks under the dolly wheels to prevent damage to the asphalt paving
surfaces. No parking or storing of such trailers will be permitted in the
parking areas or on streets adjacent thereto.

28. During periods of loading and unloading, Tenant shall not unreasonably
interfere with traffic flow and loading and unloading areas of other tenants.
All products, materials or goods must be stored within the Tenant's Premises and
not in any exterior areas, including, but not limited to, exterior dock
platforms, against the exterior of the Building, parking areas and driveway
areas. Tenant agrees to keep the exterior of the Premises clean and free of
nails, wood, pallets, packing materials, barrels and any other debris produced
from their operation.

[THE REMAINDER OF THIS PAGE INTENTIONALLY LEFT BLANK]

                                      D-3

<PAGE>

                   EXHIBIT E - ADDITIONAL SURRENDER CONDITIONS

                ATTACHED TO AND MADE A PART OF LEASE BEARING THE
                LEASE REFERENCE DATE OF SEPTEMBER 7, 2005 BETWEEN
               CALWEST INDUSTRIAL PROPERTIES, LLC, AS LANDLORD AND
                       LIMELIGHT NETWORKS, INC., AS TENANT

It is the Tenant's obligation to leave the Premises in good, clean condition
with all systems in good working order and repair. Among any other items deemed
reasonably appropriate by Landlord, the following items will be inspected by
Landlord at such time as Landlord deems inspection thereof to be appropriate to
confirm that they are in good working order and repair:

     1.   All heating and air conditioning equipment, exhaust fans and hot water
          heaters. Tenant shall provide Landlord's office with a copy of an
          inspection and service report detailing the condition of said
          equipment, which report shall be provided by an Arizona licensed
          mechanical contractor, within three (3) days after Tenant vacates or
          abandons the Premises. If Landlord terminates Tenant's right to
          possession of the Premises, Landlord shall have the report prepared at
          Tenant's cost and expense.

     2.   All lights in the office and warehouse must be working. Tenant is
          obligated to relamp and/or reballast the fixtures as necessary.

     3.   All overhead doors must be serviced and repaired.

     4.   All exterior metal doors, including hardware, must be serviced or
          replaced as necessary.

     5.   All damaged sheetrock in the office area and in the warehouse along
          the demising walls shall be repaired.

     6.   All office and warehouse floors must be left in good, clean condition.

     7.   Any and all exterior signage must be removed, with Tenant having the
          obligation to repair and repaint the fascia as necessary.

     8.   Tenant shall remove all data, telecommunication and other cabling
          installed by Tenant or Tenant's contractors within the Premises.
          Unless directed otherwise by Landlord, conduit and all other raceways
          are to remain in place. Tenant must use caution not to damage ceiling
          tile, ceiling grid, walls and all other improvements within the
          Premises when removing any such cabling. Tenant must restore ceiling
          tiles, ceiling grid, walls and all other improvements within the
          Premises to its original condition, normal wear & tear accepted.

If the Tenant elects not to do any of the above within three (3) days of written
notice, Landlord shall have the right to have the necessary repairs performed,
to deduct the cost thereof from the Security Deposit (if any), and to invoice
Tenant for the balance due. Tenant shall pay said balance within ten (10) days
of receipt of said invoice.

[THE REMAINDER OF THIS PAGE INTENTIONALLY LEFT BLANK]

                                       E-1<PAGE>

                                                                    Exhibit 10.9

                          LOAN AND SECURITY AGREEMENT
                            LIMELIGHT NETWORKS, INC.

<PAGE>
                                                                               .
                                                                               .
                                                                               .

                               TABLE OF CONTENTS

<TABLE>
<CAPTION>
                                                                            Page
                                                                            ----
<S>                                                                         <C>
1    ACCOUNTING AND OTHER TERMS .........................................     4

2    LOAN AND TERMS OF PAYMENT ..........................................     4
     2.1    Promise to Pay ..............................................     4
     2.2    Termination of Commitment to Lend ...........................     5
     2.3    Overadvances ................................................     5
     2.4    Interest Rate, Payments .....................................     6
     2.5    Authority to Debit Accounts .................................     6
     2.6    Fees ........................................................     6

3    CONDITIONS OF LOANS ................................................     6
     3.1    Conditions Precedent to Initial Credit Extension ............     6
     3.2    Conditions Precedent to all Credit Extensions ...............     7

4    CREATION OF SECURITY INTEREST ......................................     7
     4.1    Grant of Security Interest ..................................     7
     4.2    Authorization to File .......................................     7

5    REPRESENTATIONS AND WARRANTIES .....................................     7
     5.1    Due Organization and Authorization ..........................     7
     5.2    Collateral ..................................................     8
     5.3    Litigation ..................................................     8
     5.4    No Material Adverse Change in Financial Statements ..........     8
     5.5    Solvency ....................................................     8
     5.6    Regulatory Compliance .......................................     8
     5.7    Investments in Subsidiaries .................................     9
     5.8    Full Disclosure .............................................     9

6    AFFIRMATIVE CONVENANTS .............................................     9
     6.1    Government Compliance .......................................     9
     6.2    Financial Statements, Reports, Certificates .................     9
     6.3    Inventory; Returns ..........................................    10
     6.4    Taxes .......................................................    10
     6.5    Insurance ...................................................    10
     6.6    Primary Accounts ............................................    10
     6.7    Financial Covenants .........................................    10
     6.8    Registration of Intellectual Property Rights ................    11
     6.9    Further Assurances ..........................................    11

7    NEGATIVE CONVENANTS ................................................    11
     7.1    Dispositions ................................................    12
     7.2    Changes in Business, Ownership, Management or Locations .....    12
     7.3    Mergers or Acquisitions .....................................    12
     7.4    Indebtedness ................................................    12
     7.5    Encumbrance .................................................    12
     7.6    Distributions; Investments ..................................    12
     7.7    Transactions with Affiliates ................................    13
     7.8    Subordinated Debt ...........................................    13
     7.9    Compliance ..................................................    13
</TABLE>

<PAGE>

<TABLE>
<S>                                                                         <C>
8    EVENTS OF DEFAULT ..................................................    13
     8.1    Payment Default .............................................    13
     8.2    Covenant Default ............................................    13
     8.3    Material Adverse Change .....................................    13
     8.4    Attachment ..................................................    14
     8.5    Insolvency ..................................................    14
     8.6    Other Agreements ............................................    14
     8.7    Judgments ...................................................    14
     8.8    Misrepresentations ..........................................    14
     8.9    Guaranty ....................................................    14

9    BANK'S RIGHTS AND REMEDIES .........................................    14
     9.1    Rights and Remedies .........................................    14
     9.2    Power of Attorney ...........................................    15
     9.3    Bank Expenses ...............................................    15
     9.4    Bank's Liability for Collateral .............................    15
     9.5    Remedies Cumulative .........................................    16
     9.6    Demand Waiver ...............................................    16

10   NOTICES ............................................................    16

11   CHOICE OF LAW, VENUE AND JURY TRIAL WAIVER .........................    16

12   GENERAL PROVISIONS .................................................    16
     12.1   Successors and Assigns ......................................    16
     12.2   Indemnification .............................................    17
     12.3   Time of Essence .............................................    17
     12.4   Severability of Provision ...................................    17
     12.5   Amendments in Writing, Integration ..........................    17
     12.6   Counterparts ................................................    17
     12.7   Survival ....................................................    17
     12.8   Confidentiality .............................................    17
     12.9   Attorneys' Fees, Costs and Expenses .........................    17

13   DEFINITIONS ........................................................    18
     13.1   Definitions .................................................    18
</TABLE>

<PAGE>

     THIS LOAN AND SECURITY AGREEMENT dated April 15, 2005 but effective as of
the Effective Date, between SILICON VALLEY BANK, a California chartered bank
with its principal place of business at 3003 Tasman Drive, Santa Clara,
California 95054 and with a loan production office located at 14300 Northsight
Boulevard, Suite 203, Scottsdale, Arizona 85260 ("Bank") and LIMELIGHT NETWORKS,
INC., a Delaware corporation with its principal place of business at 2220 W.
14th Street, Tempe, AZ 85281 ("Borrower") provides the terms on which Bank will
lend to Borrower and Borrower will repay Bank. The parties agree as follows:

1    ACCOUNTING AND OTHER TERMS

     Accounting terms not defined in this Agreement will be construed following
GAAP. Calculations and determinations must be made following GAAP. The term
"financial statements" includes the notes and schedules. The terms "including"
and "includes" always mean "including (or includes) without limitation," in this
or any Loan Document. Capitalized terms in this Agreement shall have the
meanings set forth in Section 13, if not otherwise defined herein.

2    LOAN AND TERMS Of PAYMENT

2.1  PROMISE TO PAY.

     Borrower promises to pay Bank the unpaid principal amount of all Credit
Extensions and interest on the unpaid principal amount of the Credit Extensions.

2.1.1 REVOLVING ADVANCES.

     (a) Bank will make Advances not exceeding (i) the lesser of (A) the
Committed Revolving Line or (B) the Borrowing Base, minus (ii) the amount of all
outstanding Letters of Credit (including drawn but unreimbursed Letters of
Credit), and minus (iii) the amount of utilized Cash Management Services covered
under the Cash Management Services Sublimit. Amounts borrowed under this Section
may be repaid and reborrowed during the term of this Agreement.

     (b) To obtain an Advance, Borrower must notify Bank by facsimile or
telephone by 12:00 p.m. Pacific time on the Business Day the Advance is to be
made. Borrower must promptly confirm the notification by delivering to Bank the
Payment/Advance Form attached as Exhibit B. Bank will credit Advances to
Borrower's deposit account. Bank may make Advances under this Agreement based on
instructions from a Responsible Officer or his or her designee or without
instructions if the Advances are necessary to meet Obligations which have become
due. Bank may rely on any telephone notice given by a person whom Bank believes
is a Responsible Officer or designee. Borrower will indemnify Bank for any loss
Bank suffers due to such reliance.

     (c) The Committed Revolving Line terminates on the Revolving Maturity Date,
when all Advances are immediately payable.

2.1.2 EQUIPMENT FACILITY.

     (a) Through March 31, 2006 (the "Equipment Availability End Date"), Bank
will make advances ("Equipment Advance" and, collectively, "Equipment Advances")
not exceeding the Committed Equipment Line. The Equipment Advances may only be
used to finance or refinance Equipment purchased on or after 90 days before the
date of each Equipment Advance and may not exceed 100% of the equipment invoice
excluding taxes, shipping, warranty charges, freight discounts and installation
expense. Soft costs may constitute up to $500,000 of the aggregate Equipment
Advances. Each Equipment Advance must be for a minimum of $100,000. The number
of Equipment Advances is limited to 1 per month. Notwithstanding the foregoing,
upon the Effective Date an Equipment Advance in the amount of $750,000 shall be
advanced for

<PAGE>

Equipment purchases, provided that the amount of such Equipment Advance does not
exceed 100% of Borrower's net book value of fixed assets and that invoices for
at least $250,000 of Equipment dated within 150 days prior the date of such
Equipment Advance are provided to Bank on or prior thereto.

     (b) Each Equipment Advance shall immediately amortize and be payable in 36
equal monthly payments of principal and interest beginning 30 days following
such Equipment Advance and continuing on the same day of each month thereafter.
The final payment due on the applicable Equipment Maturity Date shall include
all outstanding principal and all accrued unpaid interest. Equipment Advances
when repaid may not be re-borrowed.

     (c) To obtain an Equipment Advance, Borrower must notify Bank (the notice
is irrevocable) by facsimile no later than 12:00 p.m. Pacific time one Business
Day before the day on which the Equipment Advance is to be made. The notice in
the form of Exhibit B (Payment/Advance Form) must be signed by a Responsible
Officer or designee and include a copy of invoices for the Equipment being
financed and such additional information as Bank may request; provided, however,
copies of invoices related to the initial Equipment Advance made on the
Effective Date shall not be required.

2.1.3 LETTERS OF CREDIT SUBLIMIT.

     Bank will issue or have issued Letters of Credit for Borrower's account not
exceeding (i) the lesser of the Committed Revolving Line or the Borrowing Base
minus (ii) the outstanding principal balance of the Advances and minus the Cash
Management Sublimit; however, the face amount of outstanding Letters of Credit
(including drawn but unreimbursed Letters of Credit) may not exceed $500,000.
Borrower's Letter of Credit reimbursement obligation will be secured by
unencumbered cash on terms acceptable to Bank at any time upon the Revolving
Maturity Date if the term of this Agreement is not extended by Bank. Borrower
agrees to execute any further documentation in connection with the Letters of
Credit as Bank may reasonably request.

2.1.4 CASH MANAGEMENT SERVICES SUBLIMIT.

     Borrower may use up to $500,000 (the "Cash Management Services Sublimit")
for Bank's Cash Management Services, which may include merchant services, direct
deposit of payroll, business credit card, and check cashing services identified
in various cash management services agreements related to such services (the
"Cash Management Services"). All amounts Bank pays for any Cash Management
Services will be treated as Advances under the Committed Revolving Line.

2.2  TERMINATION OF COMMITMENT TO LEND.

     Bank's obligation to lend the undisbursed portion of the Obligations will
terminate if, in Bank's sole discretion, there has been a material adverse
change in the general affairs, management, results of operation or condition
(financial or otherwise) of Borrower or in the prospect of repayment of the
Obligations, or there has been any material adverse deviation by Borrower from
the most recent business plan of Borrower presented to and accepted by Bank
prior to the execution of this Agreement.

2.3  OVERADVANCES.

     If Borrower's Obligations under Section 2.1.1, 2.1.3, and 2.1.4 exceed the
lesser of either (i) the Committed Revolving Line or (ii) the Borrowing Base,
Borrower must promptly pay Bank the excess.

<PAGE>

2.4  INTEREST RATE, PAYMENTS.

     (a) Interest Rate. Advances accrue interest on the outstanding principal
balance at a per annum rate equal to the greater of either (i) 0.75 percentage
points above the Prime Rate or (ii) 6.00%. Equipment Advances accrue interest on
the outstanding principal balance at a per annum rate equal to the Basic Rate.
After an Event of Default, Obligations accrue interest at 5 percent above the
rate effective immediately before the Event of Default. The interest rate
increases or decreases when the Prime Rate changes. Interest is computed on a
360 day year for the actual number of days elapsed.

     (b) Payments. Interest due on the Committed Revolving Line is payable
monthly on the same day of each month as the day on which the Effective Date
occurs. Payments received after 12:00 noon Pacific time are considered received
at the opening of business on the next Business Day. When a payment is due on a
day that is not a Business Day, the payment is due the next Business Day and
additional interest shall accrue. If any change in the law increases Bank's
expenses or decreases its return from the Equipment Advances, Borrower will pay
Bank upon request the amount of such increase or decrease.

2.5  AUTHORITY TO DEBIT ACCOUNTS.

     Bank may debit any of Borrower's deposit accounts including Account Number
3300467946 for principal and interest payments owing or any other amounts
Borrower owes Bank when due. Bank will notify Borrower when it debits Borrower's
accounts. These debits are not a set-off.

2.6  FEES. Borrower will pay:

     (a) Facility Fee. A fully earned, non-refundable Facility Fee of $20,000
for the Committed Revolving Line, due on the Effective Date, and the deposit
previously received by Bank in the same amount shall be applied against such
Fee;

     (b) Bank Expenses. All Bank Expenses (including reasonable attorneys' fees
and reasonable expenses) incurred through and after the date of this Agreement,
payable when due; and

     (c) Early Termination Fees. A fully earned, non-refundable early
termination fee of one percent (1%) of the Committed Revolving Line (currently
$10,000) shall be due upon voluntary or involuntary payment in full of
Borrower's Obligations under the Committed Revolving Line and termination of the
Committed Revolving Line prior to the Revolving Maturity Date; and a fully
earned, non-refundable early termination fee of one percent (1%) of the
outstanding principal balance of all Equipment Advances shall be due upon
voluntary or involuntary payment in full of Borrower's Obligations under the
Committed Equipment Line prior to the relevant Equipment Maturity Dates and
termination of Bank's obligation to lend the undisbursed portion of such
Obligations under the Committed Equipment Line; provided that no such early
termination fees shall be payable if Bank agrees to refinance and/or redocument
this Agreement in another lending division of Bank (in Bank's sole discretion)
prior to the relevant Maturity Dates.

3    CONDITIONS OF LOANS

3.1  CONDITIONS PRECEDENT TO INITIAL CREDIT EXTENSION.

     Bank's obligation to make the initial Credit Extension is subject to the
condition precedent that it receive the agreements, documents and fees it
reasonably requires.

<PAGE>

3.2  CONDITIONS PRECEDENT TO ALL CREDIT EXTENSIONS.

     Bank's obligations to make each Credit Extension, including the initial
Credit Extension, is subject to the following:

     (a) timely receipt of any Payment/Advance Form; and

     (b) the representations and warranties in Section 5 must be materially true
on the date of the Payment/Advance Form and on the effective date of each Credit
Extension and no Event of Default may have occurred and be continuing, or result
from the Credit Extension. Each Credit Extension is Borrower's representation
and warranty on that date that the representations and warranties of Section 5
remain true.

4    CREATION OF SECURITY INTEREST

4.1  GRANT OF SECURITY INTEREST.

     Borrower grants Bank a continuing security interest in all presently
existing and later acquired Collateral to secure all Obligations and performance
of each of Borrower's duties under the Loan Documents. Except for Permitted
Liens, any security interest will be a first priority security interest in the
Collateral. Bank may place a "hold" on any deposit account pledged as
Collateral. If this Agreement is terminated, Bank's lien and security interest
in the Collateral will continue until Borrower fully satisfies its Obligations.
If Borrower shall at any time, acquire a commercial tort claim, Borrower shall
promptly notify Bank in a writing signed by Borrower of the brief details
thereof and grant to Bank in such writing a security interest therein and in the
proceeds thereof, all upon the terms of this Agreement, with such writing to be
in form and substance reasonably satisfactory to Bank.

4.2  AUTHORIZATION TO FILE.

     Borrower authorizes Bank to file financing statements without notice to
Borrower, with all appropriate jurisdictions, as Bank deems appropriate, in
order to perfect or protect Bank's interest in the Collateral.

5    REPRESENTATIONS AND WARRANTIES

     Borrower represents and warrants as follows:

5.1  DUE ORGANIZATION AND AUTHORIZATION.

     Borrower and each Subsidiary is duly existing and in good standing in its
state of formation and qualified and licensed to do business in, and in good
standing in, any state in which the conduct of its business or its ownership of
property requires that it be qualified, except where the failure to do so could
not reasonably be expected to cause a Material Adverse Change. Borrower has not
changed its state of formation or its organizational structure or type or any
organizational number (if any) assigned by its jurisdiction of formation.

     The execution, delivery and performance of the Loan Documents have been
duly authorized, and do not conflict with Borrower's formation documents, nor
constitute an event of default under any material agreement by which Borrower is
bound. Borrower is not in default under any agreement to which or by which it is
bound in which the default could reasonably be expected to cause a Material
Adverse Change.

<PAGE>

5.2  COLLATERAL.

     Borrower has good title to the Collateral, free of Liens except Permitted
Liens or Borrower has Rights to each asset that is Collateral. Borrower has no
other deposit account, other than the deposit accounts described in the
Schedule. The Accounts are bona fide, existing obligations, and the service or
property has been performed or delivered to the account debtor or its agent for
immediate shipment to and unconditional acceptance by the account debtor. Except
as described in the Schedule the Collateral is not in the possession of any
third party bailee (such as at a warehouse). In the event that Borrower, after
the date hereof, intends to store with or otherwise deliver any of the
Collateral to such a bailee, then Borrower will receive the prior written
consent of Bank and such bailee must acknowledge in writing that the bailee is
holding such Collateral for the benefit of Bank. Borrower has no notice of any
actual or imminent Insolvency Proceeding of any account debtor whose accounts
are an Eligible Account in any Borrowing Base Certificate. All Inventory is in
all material respects of good and marketable quality, free from material
defects. Borrower is the sole owner of the intellectual Property, except for
non-exclusive licenses granted to its customers in the ordinary course of
business. Each Patent is valid and enforceable and no part of the Intellectual
Property has been judged invalid or unenforceable, in whole or in part, and no
claim has been made that any part of the Intellectual Property violates the
rights of any third party, except to the extent such claim could not reasonably
be expected to cause a Material Adverse Change.

5.3  LITIGATION.

     Except as shown in the Schedule, there are no actions or proceedings
pending or, to the knowledge of Borrower's Responsible Officers, threatened by
or against Borrower or any Subsidiary in which a likely adverse decision could
reasonably be expected to cause a Material Adverse Change.

5.4  NO MATERIAL ADVERSE CHANGE IN FINANCIAL STATEMENTS.

     All consolidated financial statements for Borrower, and any Subsidiary,
delivered to Bank fairly present in all material respects Borrower's
consolidated financial condition and Borrower's consolidated results of
operations. There has not been any material deterioration in Borrower's
consolidated financial condition since the date of the most recent financial
statements submitted to Bank.

5.5  SOLVENCY.

     The fair salable value of Borrower's assets (including goodwill minus
disposition costs) exceeds the fair value of its liabilities; the Borrower is
not left with unreasonably small capital after the transactions in this
Agreement; and Borrower is able to pay its debts (including trade debts) as they
mature.

5.6  REGULATORY COMPLIANCE.

     Borrower is not an "investment company" or a company "controlled" by an
"investment company" under the investment Company Act. Borrower is not engaged
as one of its important activities in extending credit for margin stock (under
Regulations T and U of the Federal Reserve Board of Governors). Borrower has
complied in all material respects with the Federal Fair Labor Standards Act.
Borrower has not violated any laws, ordinances or rules, the violation of which
could reasonably be expected to cause a Material Adverse Change. None of
Borrower's or any Subsidiary's properties or assets has been used by Borrower or
any Subsidiary or, to the best of Borrower's knowledge, by previous Persons, in
disposing, producing, storing, treating, or transporting any hazardous substance
other than legally. Borrower and each Subsidiary has timely filed all required
tax returns and paid, or made adequate provision to pay, all material taxes,
except those being contested in good faith with adequate reserves under GAAP.
Borrower

<PAGE>

and each Subsidiary has obtained all consents, approvals and authorizations of,
made all declarations or filings with, and given all notices to, all government
authorities that are necessary to continue its business as currently conducted,
except where the failure to do so could not reasonably be expected to cause a
Material Adverse Change.

5.7  INVESTMENTS IN SUBSIDIARIES.

     Borrower does not own any stock, partnership interest or other equity
securities except for Permitted investments.

5.8  FULL DISCLOSURE.

     No written representation, warranty or other statement of Borrower in any
certificate or written statement given to Bank (taken together with all such
written certificates and written statements to Bank) contains any untrue
statement of a material fact or omits to state a material fact necessary to make
the statements contained in the certificates or statements not misleading. It
being recognized by Bank that the projections and forecasts provided by Borrower
in good faith and based upon reasonable assumptions are not viewed as facts and
that actual results during the period or periods covered by such projections and
forecasts may differ from the projected and forecasted results.

6    AFFIRMATIVE COVENANTS

     Borrower will do all of the following for so long as Bank has an obligation
to lend, or there are outstanding Obligations:

6.1  GOVERNMENT COMPLIANCE.

     Borrower will maintain its and all Subsidiaries' legal existence and good
standing in its jurisdiction of formation and maintain qualification in each
jurisdiction in which the failure to so qualify would reasonably be expected to
cause a material adverse effect on Borrower's business or operations. Borrower
will comply, and have each Subsidiary comply, with all laws, ordinances and
regulations to which it is subject, the noncompliance with which could
reasonably be expected to have a material adverse effect on Borrower's business
or operations or would reasonably be expected to cause a Material Adverse
Change.

6.2  FINANCIAL STATEMENTS, REPORTS, CERTIFICATES.

     (a) Borrower will deliver to Bank: (i) as soon as available, but no later
than 20 days after the last day of each month, a company prepared consolidated
balance sheet and income statement covering Borrower's consolidated operations
during the period certified by a Responsible Officer and in a form acceptable to
Bank; (ii) as soon as available, but no later than 120 days after the last day
of Borrower's fiscal year, audited consolidated financial statements prepared
under GAAP, consistently applied, together with an unqualified opinion on the
financial statements from an independent certified public accounting firm
reasonably acceptable to Bank; (iii) within 5 days of filing, copies of all
statements, reports and notices made available to Borrower's security holders or
to any holders of Subordinated Debt and all reports on Form 10-K, 10-Q and 8-K,
if any, filed with the Securities and Exchange Commission; (iv) a prompt report
of any legal actions pending or threatened against Borrower or any Subsidiary
that could result in damages or costs to Borrower or any Subsidiary of $100,000
or more; (v) budgets, sales projections, operating plans or other financial
information Bank reasonably requests; (vi) prompt notice of any material change
in the composition of the intellectual Property, including any subsequent
ownership right of Borrower in or to any Copyright, Patent or Trademark not
shown in any intellectual property security agreement between Borrower and Bank
or knowledge of an event that materially adversely affects the value of the
intellectual Property; and (vii) as soon as
<PAGE>

available but no later than 30 days prior to each fiscal year end, Borrower's
financial projections for the following year on a monthly basis.

     (b) Within 20 days after the last day of each month, Borrower will deliver
to Bank a Borrowing Base Certificate signed by a Responsible Officer in the form
of Exhibit C, with aged listings of accounts receivable and accounts payable.

     (c) Within 20 days after the last day of each month, Borrower will deliver
to Bank with the monthly financial statements a Compliance Certificate signed by
a Responsible Officer in the form of Exhibit D.

     (d) Borrower will allow Bank to audit Borrower's Collateral at Borrower's
expense. Such audits will be conducted no more often than annually unless an
Event of Default has occurred and is continuing.

6.3  INVENTORY; RETURNS.

     Borrower will keep all Inventory in good and marketable condition, free
from material defects. Returns and allowances between Borrower and its account
debtors will follow Borrower's customary practices as they exist at execution of
this Agreement. Borrower must promptly notify Bank of all returns, recoveries,
disputes and claims, that involve more than $50,000.

6.4  TAXES.

     Borrower will make, and cause each Subsidiary to make, timely payment of
all material federal, state, and local taxes or assessments and will deliver to
Bank, on demand, appropriate certificates attesting to the payment.

6.5  INSURANCE.

     Borrower will keep its business and the Collateral insured for risks and in
amounts, as Bank may reasonably request. Insurance policies will be in a form,
with companies, and in amounts that are satisfactory to Bank in Bank's
reasonable discretion. All property policies will have a lender's loss payable
endorsement showing Bank as an additional loss payee and all liability policies
will show the Bank as an additional insured and provide that the insurer must
give Bank at least 20 days notice before canceling its policy. At Bank's
request, Borrower will deliver certified copies of policies and evidence of all
premium payments. Proceeds payable under any policy will, at Bank's option, be
payable to Bank on account of the Obligations.

6.6  PRIMARY ACCOUNTS.

     Borrower will maintain its primary operating and investment accounts with
Bank. As to any deposit accounts and investment accounts maintained with
institutions not related to Bank, in which the aggregate balances exceed 10% of
Borrower's cash, Borrower shall cause such institutions to enter into a control
agreement in form acceptable to Bank in its good faith business judgment in
order to perfect Bank's first priority security interest in said deposit
accounts and investment accounts.

6.7  FINANCIAL COVENANTS.

     Borrower will maintain as of the last day of each month:

<PAGE>

          (i) QUICK RATIO (ADJUSTED). A ratio of Quick Assets to Current
Liabilities (excluding investor/related party debt) of at least 1.00 to 1.00
until October 31, 2005 and thereafter at least 1.25 to 1.00.

          (ii) DEBT SERVICE COVERAGE RATIO. A ratio of Borrower's (a)
consolidated earnings before interest expense, income taxes, depreciation,
amortization of intangible assets and other non-cash charges made to Borrower's
income (all a determined by GAAP) minus unfunded capital expenditures for the
preceeding three-month period to (b) current maturities of long term debt due
Bank plus interest expense paid Bank during the preceeding three-month period of
at least 2.00 to 1.00, measured monthly on a rolling 3 month basis.

6.8  REGISTRATION OF INTELLECTUAL PROPERTY RIGHTS.

     Borrower shall not register any Copyrights or Mask Works with the United
States Copyright Office unless it: (i) has given at least fifteen (15) days'
prior notice to Bank of its intent to register such Copyrights or Mask Works and
has provided Bank with a copy of the application it intends to file with the
United States Copyright Office (excluding exhibits thereto); (ii) executes a
security agreement or such other documents as Bank may reasonably request in
order to maintain the perfection and priority of Bank's security interest in the
Copyrights proposed to be registered with the United States Copyright Office;
and (iii) records such security documents with the United States Copyright
Office contemporaneously with filing the Copyright application(s) with the
United States Copyright Office. Borrower shall promptly provide to Bank a copy
of the Copyright application(s) filed with the United States Copyright Office,
together with evidence of the recording of the security documents necessary for
Bank So maintain the perfection and priority of its security interest in such
Copyrights or Mask Works. Borrower shall provide written notice to Bank of any
application filed by Borrower in the United States Patent Trademark Office for a
patent or to register a trademark or service mark within 30 days of any such
filing.

     Borrower will (i) protect, defend and maintain the validity and
enforceability of the Intellectual Property and promptly advise Bank in writing
of material infringements and (ii) not allow any Intellectual Property to be
abandoned, forfeited or dedicated to the public without Bank's written consent.

6.9  FURTHER ASSURANCES.

     (a) Borrower will execute any further instruments and take further action
as Bank reasonably requests to perfect or continue Bank's security interest in
the Collateral or to effect the purposes of this Agreement.

     (b) Borrower will cause each Subsidiary to guaranty the Obligations.

     (c) Within 60 days following the Effective Date, Borrower will deliver to
Bank Consents to Removal of Personal Property (or such other form of landlord's
waiver as may be acceptable to Bank in its sole discretion) from the owners of
Borrower's Tempe, Arizona headquarters, and from the owners of the premises at
such locations as Bank may specify where Equinix, Global Crossing and Switch and
Data are lessees, renters or otherwise have possession of Borrower's assets.

7    NEGATIVE COVENANTS

<PAGE>

     For so long as Bank has an obligation to lend or there are any outstanding
Obligations, Borrower shall not, without Bank's prior written consent (which
shall be a matter of its good faith business judgment), do any of the following:

7.1  DISPOSITIONS.

     Convey, sell, lease, transfer or otherwise dispose of (collectively
"Transfer"), or permit any of its Subsidiaries to Transfer, all or any part of
its business or property, except for Transfers (i) of Inventory in the ordinary
course of business; (ii) of non-exclusive licenses and similar arrangements for
the use of the property of Borrower or its Subsidiaries In the ordinary course
of business; or (iii) of worn-out or obsolete Equipment.

7.2  CHANGES IN BUSINESS, OWNERSHIP, MANAGEMENT OR LOCATIONS OF COLLATERAL.

     Engage in or permit any of its Subsidiaries to engage in any business other
than the businesses currently engaged in by Borrower or reasonably related
thereto or have a material change in its ownership or management of greater than
25% (other than by the sale of Borrower's equity securities in a public offering
or to venture capital investors so long as Borrower identifies the venture
capital investors prior to the closing of the investment). Borrower will not,
without at least 30 days prior written notice, relocate its chief executive
office, change its state of formation (including reincorporation), change its
organizational number or name or add any new offices or business locations (such
as warehouses) in which Borrower maintains or stores over $5,000 in Collateral.

7.3  MERGERS OR ACQUISITIONS.

     Merge or consolidate, or permit any of its Subsidiaries to merge or
consolidate, with any other Person, or acquire, or permit any of its
Subsidiaries to acquire, all or substantially all of the capital stock or
property of another Person, except, as long as no Event of Default has occurred
and is continuing or would result from such action during the term of this
Agreement, (i) where such transaction would not require more than 15% of
Borrower's cash or 25% of Borrower's stock, and (ii) a Subsidiary may merge or
consolidate into another Subsidiary or into Borrower.

7.4  INDEBTEDNESS.

     Create, incur, assume, or be liable for any indebtedness, or permit any
Subsidiary to do so, other than Permitted Indebtedness.

7.5  ENCUMBRANCE.

     Create, incur, or allow any Lien on any of its property, or assign or
convey any right to receive income, including the sale of any Accounts, or
permit any of its Subsidiaries to do so, except for Permitted Liens, or permit
any Collateral not to be subject to the first priority security interest granted
here, subject to Permitted Liens.

7.6  DISTRIBUTIONS; INVESTMENTS.

     Directly or indirectly acquire or own any Person, or make any investment in
any Person, other than Permitted Investments, or permit any of its Subsidiaries
to do so; or pay any dividends or make any distribution or payment with respect
to, or redeem, retire or purchase, any capital stock, except that Borrower may
make repurchases of stock in Borrower from former employees or directors of
Borrower or its Subsidiaries under the terms of applicable repurchase agreements
in an aggregate amount not to exceed $100,000 in any fiscal year, provided that
no Event of Default has occurred and is continuing or would exist after giving
effect to any such repurchase.

<PAGE>

7.7  TRANSACTIONS WITH AFFILIATES.

     Directly or indirectly enter into or permit to exist any material
transaction with any Affiliate of Borrower except for transactions that are in
the ordinary course of Borrower's business, upon fair and reasonable terms that
are no less favorable to Borrower than would be obtained in an arm's length
transaction with a nonaffiliated Person.

7.8  SUBORDINATED DEBT.

     Make or permit any payment on any Subordinated Debt, except under the terms
of the Subordinated Debt, or amend any provision in any document relating to the
Subordinated Debt without Bank's prior written consent.

7.9  COMPLIANCE.

     Become an "investment company" or a company controlled by an "investment
company," under the Investment Company Act of 1940 or undertake as one of its
important activities extending credit to purchase or carry margin stock, or use
the proceeds of any Credit Extension for that purpose; fail to meet the minimum
funding requirements of ERISA, permit a Reportable Event or Prohibited
Transaction, as defined in ERISA, to occur; fail to comply with the Federal Fair
Labor Standards Act or violate any other law or regulation, if the violation
could reasonably be expected to have a material adverse effect on Borrower's
business or operations or would reasonably be expected to cause a Material
Adverse Change, or permit any of its Subsidiaries to do so.

8    EVENTS OF DEFAULT

     Any one of the following is an Event of Default;

8.1  PAYMENT DEFAULT.

     If Borrower fails to pay any of the Obligations within 3 days after their
due date, however, during such period no Credit Extensions will be made;

8.2  COVENANT DEFAULT.

     (a) If Borrower fails to perform any obligation under Sections 6.2 or 6.7
or violates any of the covenants contained in Section 7 of this Agreement, or

     (b) If Borrower fails or neglects to perform, keep, or observe any other
material term, provision, condition, covenant, or agreement contained in this
Agreement, in any of the Loan Documents, or in any other present or future
agreement between Borrower and Bank and as to any default under such other term,
provision, condition, covenant or agreement that can be cured, has failed to
cure such default within ten (10) days after the occurrence thereof; provided,
however, that if the default cannot by its nature be cured within the ten (10)
day period or cannot after diligent attempts by Borrower be cured within such
ten (10) day period, and such default is likely to be cured within a reasonable
time, then Borrower shall have an additional reasonable period (which shall not
in any case exceed thirty (30) days) to attempt to cure such default, and within
such reasonable time period the failure to have cured such default shall not be
deemed an Event of Default (provided that no Credit Extensions will be made
during such cure period);

8.3  MATERIAL ADVERSE CHANGE.

     If there (i) occurs a material adverse change in the business, operations,
or financial condition of the Borrower, or (ii) is a material impairment of the
prospect of repayment of any

<PAGE>

portion of the Obligations; or (iii) is a material impairment of the value or
priority of Bank's security interests in the Collateral (the foregoing being
defined as a "Material Adverse Change").

8.4  ATTACHMENT.

     If any material portion of Borrower's assets is attached, seized, levied
on, or comes into possession of a trustee or receiver and the attachment,
seizure or levy is not removed in 10 days, or if Borrower is enjoined,
restrained, or prevented by court order from conducting a material part of its
business or if a judgment or other claim becomes a Lien on a material portion of
Borrower's assets, or if a notice of lien, levy, or assessment is filed against
any of Borrower's assets, by any government agency and not paid within 10 days
after Borrower receives notice. These are not Events of Default if stayed or if
a bond is posted pending contest by Borrower (but no Credit Extensions will be
made during the cure period);

8.5  INSOLVENCY.

     If Borrower becomes insolvent or if Borrower begins an Insolvency
Proceeding or an Insolvency Proceeding is begun against Borrower and not
dismissed or stayed within 45 days (but no Credit Extensions will be made before
any Insolvency Proceeding is dismissed);

8.6  OTHER AGREEMENTS.

     If there is a default in any agreement between Borrower and a third party
that gives the third party the right to accelerate any Indebtedness exceeding
$100,000 or that could cause a Material Adverse Change;

8.7  JUDGMENTS.

     If a money judgment(s) in the aggregate of at least $100,000 is rendered
against Borrower and is unsatisfied and unstayed for 10 days (but no Credit
Extensions will be made before the judgment is stayed or satisfied);

8.8  MISREPRESENTATIONS.

     If Borrower or any Person acting for Borrower makes any material
misrepresentation or material misstatement now or later in any warranty or
representation in this Agreement or in any writing delivered to Bank or to
induce Bank to enter this Agreement or any Loan Document; or

8.9  GUARANTY.

     Any guaranty of any Obligations ceases for any reason to be in full force
or any Guarantor does not perform any obligation under any guaranty of the
Obligations, or any material misrepresentation or material misstatement exists
now or later in any warranty or representation in any guaranty of the
Obligations or in any certificate delivered to Bank in connection with the
guaranty, or any circumstance described in Sections 8.4, 8.5 or 8.7 occurs to
any Guarantor.

9    BANK'S RIGHTS AND REMEDIES

9.1  RIGHTS AND REMEDIES.

     When an Event of Default occurs and continues Bank may, without notice or
demand, do any or all of the following:

     (a) Declare all Obligations immediately due and payable (but if an Event of
Default described in Section 8.5 occurs all Obligations are immediately due and
payable without any action by Bank);

<PAGE>

     (b) Stop advancing money or extending credit for Borrower's benefit under
this Agreement or under any other agreement between Borrower and Bank;

     (c) Settle or adjust disputes and claims directly with account debtors for
amounts, on terms and in any order that Bank considers advisable; notify any
Person owing Borrower money of Bank's security interest in the funds and verify
the amount of the Account. Borrower must collect all payments in trust for Bank
and, if requested by Bank, immediately deliver the payments to Bank in the form
received from the account debtor, with proper endorsements for deposit;

     (d) Make any payments and do any commercially reasonable acts it considers
necessary or reasonable to protect its security interest in the Collateral.
Borrower will assemble the Collateral if Bank requires and make it available as
Bank designates. Bank may enter premises where the Collateral is located, take
and maintain possession of any part of the Collateral, and pay, purchase,
contest, or compromise any Lien which appears to be prior or superior to its
security interest and pay all expenses incurred. Borrower grants Bank a license
to enter and occupy any of its premises, without charge, to exercise any of
Bank's rights or remedies;

     (e) Place a "hold" on any account maintained with Bank and deliver a notice
of exclusive control, any entitlement order, or other directions or instructions
pursuant to any control agreement or similar agreements providing control of any
Collateral;

     (f) Apply to the Obligations any (i) balances and deposits of Borrower it
holds, or (ii) any amount held by Bank owing to or for the credit or the account
of Borrower;

     (g) Ship, reclaim, recover, store, finish, maintain, repair, prepare for
sale, advertise for sale, and sell the Collateral. Bank is granted a
non-exclusive, royalty-free license or other right to use, without charge,
Borrower's labels, Patents, Copyrights, Mask Works, rights of use of any name,
trade secrets, trade names, Trademarks, service marks, and advertising matter,
or any similar property as it pertains to the Collateral, in completing
production of, advertising for sale, and selling any Collateral and, in
connection with Bank's exercise of its rights under this Section, Borrower's
rights under all licenses and all franchise agreements inure to Bank's benefit;
and

     (h) Dispose of the Collateral according to the Code.

9.2  POWER OF ATTORNEY.

     Effective only when an Event of Default occurs and continues, Borrower
irrevocably appoints Bank as its lawful attorney to: (i) endorse Borrower's name
on any checks or other forms of payment or security; (ii) sign Borrower's name
on any invoice or bill of lading for any Account or drafts against account
debtors, (iii) make, settle, and adjust all claims under Borrower's insurance
policies; (iv) settle and adjust disputes and claims about the Accounts directly
with account debtors, for amounts and on terms Bank determines reasonable; and
(v) transfer the Collateral into the name of Bank or a third party as the Code
permits. Bank may exercise the power of attorney to sign Borrower's name on any
documents necessary to perfect or continue the perfection of any security
interest regardless of whether an Event of Default has occurred. Bank's
appointment as Borrower's attorney in fact, and all of Bank's rights and powers,
coupled with an interest, are irrevocable until all Obligations have been fully
repaid and performed and Bank's obligation to provide Credit Extensions
terminates.

9.3  BANK EXPENSES.

     If Borrower fails to pay any amount or furnish any required proof of
payment to third persons, Bank may make all or part of the payment or obtain
insurance policies required in Section 6.5, and take any commercially reasonable
action under the policies Bank deems prudent. Any amounts paid by Bank are Bank
Expenses and immediately due and payable,

<PAGE>

bearing interest at the then applicable rate and secured by the Collateral. No
payments by Bank are deemed an agreement to make similar payments in the future
or Bank's waiver of any Event of Default.

9.4  BANK'S LIABILITY FOR COLLATERAL.

     If Bank complies with reasonable banking practices and Section 9-207 of the
Code, it is not liable for: (a) the safekeeping of the Collateral; (b) any loss
or damage to the Collateral; (c) any diminution in the value of the Collateral;
or (d) any act or default of any carrier, warehouseman, bailee, or other person.
Except as provided above, Borrower bears all risk of loss, damage or destruction
of the Collateral.

9.5  REMEDIES CUMULATIVE.

     Bank's rights and remedies under this Agreement, the Loan Documents, and
all other agreements are cumulative. Bank has all rights and remedies provided
under the Code, by law, or in equity. Bank's exercise of one right or remedy is
not an election, and Bank's waiver of any Event of Default is not a continuing
waiver. Bank's delay is not a waiver, election, or acquiescence. No waiver is
effective unless signed by Bank and then is only effective for the specific
instance and purpose for which it was given.

9.6  DEMAND WAIVER.

     Except as otherwise provided in this Agreement, Borrower waives demand,
notice of default or dishonor, notice of payment and nonpayment, notice of any
default, nonpayment at maturity, release, compromise, settlement, extension, or
renewal of accounts, documents, instruments, chattel paper, and guarantees held
by Bank on which Borrower is liable.

10   NOTICES

     All notices or demands by any party about this Agreement or any other
related agreement must be in writing and be personally delivered or sent by an
overnight delivery service, by certified mail, postage prepaid, return receipt
requested, or by facsimile to the addresses set forth at the beginning of this
Agreement. A party may change its notice address by giving the other party
written notice.

11   CHOICE OF LAW, VENUE AND JURY TRIAL WAIVER

     Arizona law governs the Loan Documents without regard to principles of
conflicts of law. Borrower and Bank each submit to the exclusive jurisdiction of
the State and Federal courts in Maricopa County, Arizona.

BORROWER AND BANK EACH WAIVE THEIR RIGHT TO A JURY TRIAL OF ANY CLAIM OR CAUSE
OF ACTION ARISING OUT OF ANY OF THE LOAN DOCUMENTS OR ANY CONTEMPLATED
TRANSACTION, INCLUDING CONTRACT, TORT, BREACH OF DUTY AND ALL OTHER CLAIMS. THIS
WAIVER IS A MATERIAL INDUCEMENT FOR BOTH PARTIES TO ENTER INTO THIS AGREEMENT.
EACH PARTY HAS REVIEWED THIS WAIVER WITH ITS COUNSEL.

12   GENERAL PROVISIONS

12.1 SUCCESSORS AND ASSIGNS.

     This Agreement binds and is for the benefit of the successors and permitted
assigns of each party. Borrower may not assign this Agreement or any rights
under it without Bank's prior written consent which may be granted or withheld
in Bank's discretion. Bank has the right,

<PAGE>

without the consent of or notice to Borrower, to sell, transfer, negotiate, or
grant participation in all or any part of, or any interest in, Bank's
obligations, rights and benefits under this Agreement.

12.2 INDEMNIFICATION.

     Borrower will indemnify, defend and hold harmless Bank and its officers,
employees, and agents against: (a) all obligations, demands, claims, and
liabilities asserted by any other party in connection with the transactions
contemplated by the Loan Documents; and (b) all losses or Bank Expenses
incurred, or paid by Bank from, following, or consequential to transactions
between Bank and Borrower (including reasonable attorneys fees and expenses),
except for losses caused by Bank's gross negligence or willful misconduct.

12.3 TIME OF ESSENCE.

     Time is of the essence for the performance of all obligations in this
Agreement.

12.4 SEVERABILITY OF PROVISION.

     Each provision of this Agreement is severable from every other provision in
determining the enforceability of any provision.

12.5 AMENDMENTS IN WRITING, INTEGRATION.

     All amendments to this Agreement must be in writing and signed by Borrower
and Bank. This Agreement represents the entire agreement about this subject
matter, and supersedes prior negotiations or agreements. All prior agreements,
understandings, representations, warranties, and negotiations between the
parties about the subject matter of this Agreement merge into this Agreement and
the Loan Documents.

12.6 COUNTERPARTS.

     This Agreement may be executed in any number of counterparts and by
different parties on separate counterparts, each of which, when executed and
delivered, are an original, and all taken together, constitute one Agreement.

12.7 SURVIVAL.

     All covenants, representations and warranties made in this Agreement
continue in full force while any Obligations remain outstanding. The obligations
of Borrower in Section 12.2 to indemnify Bank will survive until all statutes of
limitations for actions that may be brought against Bank have run.

12.8 CONFIDENTIALITY.

     In handling any confidential information, Bank will exercise the same
degree of care that it exercises for its own proprietary information, but
disclosure of information may be made (i) to Bank's subsidiaries or affiliates
in connection with their business with Borrower, (ii) to prospective transferees
or purchasers of any interest in the loans (provided, however, Bank shall use
commercially reasonable efforts in obtaining such prospective transferee or
purchasers agreement of the terms of this provision), (iii) as required by law,
regulation, subpoena, or other order, (iv) as required in connection with Bank's
examination or audit and (v) as Bank considers reasonably appropriate exercising
remedies under this Agreement. Confidential information does not include
information that either: (a) is in the public domain or in Bank's possession
when disclosed to Bank, or becomes part of the public domain after disclosure to
Bank; or (b) is disclosed to Bank by a third party, if Bank does not know that
the third party is prohibited from disclosing the information.

<PAGE>

12.9 ATTORNEYS' FEES, COSTS AND EXPENSES.

     In any action or proceeding between Borrower and Bank arising out of the
Loan Documents, the prevailing party will be entitled to recover its reasonable
attorneys' fees and other reasonable costs and expenses incurred, in addition to
any other relief to which it may be entitled.

13   DEFINITIONS

13.1 DEFINITIONS.

     In this Agreement:

     "ACCOUNTS" are all existing and later arising accounts, contract rights,
and other obligations owed Borrower in connection with its sale or lease of
goods (including licensing software and other technology) or provision of
services, all credit insurance, guaranties, other security and all merchandise
returned or reclaimed by Borrower and Borrower's Books relating to any of the
foregoing, as such definition may be amended from time to time according to the
Code.

     "ADVANCE" or "ADVANCES" is a loan advance (or advances) under the Committed
Revolving Line.

     "AFFILIATE" of a Person is a Person that owns or controls directly or
indirectly the Person, any Person that controls or is controlled by or is under
common control with the Person, and each of that Person's senior executive
officers, directors, partners and, for any Person that is a limited liability
company, that Person's managers and members.

     "BANK EXPENSES" are all reasonable audit fees and expenses and reasonable
costs and expenses (including reasonable attorneys' fees and expenses) for
preparing, negotiating, administering, defending and enforcing the Loan
Documents (including appeals or insolvency Proceedings).

     "BASIC RATE" is, as of the date of the Equipment Advance, the per annum
rate of interest (based on a year of 360 days) equal to the sum of (a) the U.S.
Treasury note yield to maturity for a term equal to 36 months as quoted in The
Wall Street Journal on the day of the Equipment Advance, plus (b) 4.25%.

     "BORROWER'S BOOKS" are all Borrower's books and records including ledgers,
records regarding Borrower's assets or liabilities, the Collateral, business
operations or financial condition and all computer programs or discs or any
equipment containing the information.

     "BORROWING BASE" is 80% of Eligible Accounts, as determined by Bank from
Borrower's most recent Borrowing Base Certificate; provided, however, that Bank
may lower the percentage of the Borrowing Base after performing an audit of
Borrower's Collateral.

     "BUSINESS DAY" is any day that is not a Saturday, Sunday or a day on which
the Bank is closed.

     "CASH MANAGEMENT SERVICES" are defined in Section 2.1.4.

     "CODE" is the Arizona Uniform Commercial Code, as applicable.

     "COLLATERAL" is the property described on Exhibit A.

     "COMMITTED EQUIPMENT LINE" is a Credit Extension of up to $2,750,000.
<PAGE>

     "COMMITTED REVOLVING LINE" is an Advance of up to $1,000,000.

     "COMMITMENT TERMINATION DATE" is March 31, 2006.

     "CONTINGENT OBLIGATION" is, for any Person, any direct or indirect
liability, contingent or not, of that Person for (i) any indebtedness, lease,
dividend, letter of credit or other obligation of another such as an obligation
directly or indirectly guaranteed, endorsed, co-made, discounted or sold with
recourse by that Person, or for which that Person is directly or indirectly
liable; (ii) any obligations for undrawn letters of credit for the account of
that Person; and (iii) all obligations from any interest rate, currency or
commodity swap agreement, interest rate cap or collar agreement, or other
agreement or arrangement designated to protect a Person against fluctuation in
interest rates, currency exchange rates or commodity prices; but "Contingent
Obligation" does not include endorsements in the ordinary course of business.
The amount of a Contingent Obligation is the stated or determined amount of the
primary obligation for which the Contingent Obligation is made or, if not
determinable, the maximum reasonably anticipated liability for it determined by
the Person in good faith; but the amount may not exceed the maximum of the
obligations under the guarantee or other support arrangement.

     "COPYRIGHTS" are all copyright rights, applications or registrations and
like protections in each work or authorship or derivative work, whether
published or not (whether or not it is a trade secret) now or later existing,
created, acquired or held.

     "CREDIT EXTENSION" is each Advance, Equipment Advance, Letter of Credit, or
any other extension of credit by Bank for Borrower's benefit.

     "CURRENT ASSETS" are amounts that under GAAP should be included on that
date as current assets on Borrower's consolidated balance sheet.

     "CURRENT LIABILITIES" are the aggregate amount of Borrower's Total
liabilities which mature within one (1) year.

     "EFFECTIVE DATE" is the date Bank executes this Agreement.

     "ELIGIBLE ACCOUNTS" are Accounts in the ordinary course of Borrower's
business that meet all Borrower's representations and warranties in Section 5;
but Bank may in its reasonable discretion change eligibility standards by giving
Borrower notice. Unless Bank agrees otherwise in writing, Eligible Accounts will
not include:

     (a) Accounts that the account debtor has not paid within 90 days of invoice
     date;

     (b) Accounts for an account debtor, 50% or more of whose Accounts have not
     been paid within 90 days of invoice date;

     (c) Credit balances over 90 days from invoice date;

     (d) Accounts for an account debtor, including Affiliates, whose total
     obligations to Borrower exceed 25% of all Accounts, for the amounts that
     exceed that percentage, unless the Bank approves in writing;

     (e) Accounts for which the account debtor does not have its principal place
     of business in the United States, except for Accounts which are otherwise
     Eligible and where the account debtor has its principal place of business
     in the United Kingdom limited to an aggregate amount of $125,000;

     (f) Accounts for which the account debtor is a federal government entity or
     any department, agency, or instrumentality, except for Accounts of the
     United States if the

<PAGE>

     payee has assigned its payment rights to Bank and the assignment has been
     acknowledged under the Assignment of Claims Act of 1940 (31 U.S.C. 3727);

     (g) Accounts for which Borrower owes the account debtor, but only up to the
     amount owed (sometimes called "contra" accounts, accounts payable, customer
     deposits or credit accounts);

     (h) Accounts for demonstration or promotional equipment, or in which goods
     are consigned, sales guaranteed, sale or return, sale on approval, bill and
     hold, or other terms if account debtor's payment may be conditional;

     (i) Accounts for which the account debtor is Borrower's Affiliate, officer,
     employee, or agent;

     (j) Accounts in which the account debtor disputes liability or makes any
     claim and Bank believes there may be a basis for dispute (but only up to
     the disputed or claimed amount), or if the Account Debtor is subject to an
     Insolvency Proceeding, or becomes insolvent, or goes out of business;

     (k) Accounts for which Bank reasonably determines collection to be
     doubtful.

     "EQUIPMENT" is all present and future machinery, equipment, tenant
improvements, furniture, fixtures, vehicles, tools, parts and attachments in
which Borrower has any interest.

     "EQUIPMENT ADVANCE" is defined in Section 2.1.2.

     "EQUIPMENT AVAILABILITY END DATE" is defined in Section 2.1.2.

     "EQUIPMENT MATURITY DATE" is a date 36 months after each Equipment Advance,
but no later than March 31, 2009 as to the last Equipment Advance.

     "ERISA" is the Employment Retirement Income Security Act of 1974, and its
regulations.

     "GAAP" is generally accepted accounting principles.

     "GUARANTOR" is any present or future guarantor of the Obligations,
including any present or future Subsidiary of Borrower.

     "INDEBTEDNESS" is (a) indebtedness for borrowed money or the deferred price
of property or services, such as reimbursement and other obligations for surety
bonds and letters of credit, (b) obligations evidenced by notes, bonds,
debentures or similar instruments, (c) capital lease obligations and (d)
Contingent Obligations.

     "INSOLVENCY PROCEEDING" are proceedings by or against any Person under the
United States Bankruptcy Code, or any other bankruptcy or insolvency law,
including assignments for the benefit of creditors, compositions, extensions
generally with its creditors, or proceedings seeking reorganization,
arrangement, or other relief.

     "INTELLECTUAL PROPERTY" is all of Borrower's:

     (a) Copyrights, Trademarks, Patents, and Mask Works including amendments,
renewals, extensions, and all licenses or other rights to use and all license
fees and royalties from the use;

     (b) Any trade secrets and any intellectual property rights in computer
software and computer software products now or later existing, created,
acquired or held;

<PAGE>

     (c) All design rights which may be available to Borrower now or later
created, acquired or held;

     (d) Any claims for damages (past, present or future) for infringement of
any of the rights above, with the right, but not the obligation, to sue and
collect damages for use or infringement of the intellectual property rights
above;

     All proceeds and products of the foregoing, including all insurance,
indemnity or warranty payments.

     "INVENTORY" is present and future inventory in which Borrower has any
interest, including merchandise, raw materials, parts, supplies, packing and
shipping materials, work in process and finished products intended for sale or
lease or to be furnished under a contract of service, of every kind and
description now or later owned by or in the custody or possession, actual or
constructive, of Borrower, including inventory temporarily out of its custody or
possession or in transit and including returns on any accounts or other proceeds
(including insurance proceeds) from the sale or disposition of any of the
foregoing and any documents of title.

     "INVESTMENT" is any beneficial ownership of (including stock, partnership
interest or other securities) any Person, or any loan, advance or capital
contribution to any Person.

     "LETTER OF CREDIT" is defined in Section 2.1.3.

     "LIEN" is a mortgage, lien, deed of trust, charge, pledge, security
interest or other encumbrance.

     "LOAN DOCUMENTS" are, collectively, this Agreement, any note, or notes or
guaranties executed by Borrower or any Guarantor, and any other present or
future agreement between Borrower and/or for the benefit of Bank in connection
with this Agreement, all as amended, extended or restated.

     "MASK WORKS" are all mask works or similar rights available for the
protection of semiconductor chips, now owned or later acquired.

     "MATERIAL ADVERSE CHANGE" is defined in Section 8.3.

     "OBLIGATIONS" are debts, principal, interest, Bank Expenses and other
amounts Borrower owes Bank now or later, including cash management services,
letters of credit and foreign exchange contracts, if any and including interest
accruing after insolvency Proceedings begin and debts, liabilities, or
obligations of Borrower assigned to Bank.

     "PATENTS" are patents, patent applications and like protections, including
Improvements, divisions, continuations, renewals, reissues, extensions and
continuations-in-part of the same.

     "PERMITTED INDEBTEDNESS" IS:

     (a)  Borrower's indebtedness to Bank under this Agreement or any other Loan
          Document;

     (b)  indebtedness existing on the Effective Date and shown on the Schedule;

     (c)  Subordinated Debt;

     (d)  indebtedness to trade creditors incurred in the ordinary course of
          business; and

     (e)  indebtedness secured by Permitted Liens.

<PAGE>

     "PERMITTED INVESTMENTS" are:

     (a) Investments shown on the Schedule and existing on the Effective Date;
and

     (b) (i) marketable direct obligations issued or unconditionally guaranteed
by the United States or its agency or any State maturing within 1 year from its
acquisition, (ii) commercial paper maturing no more than 1 year after its
creation and having the highest rating from either Standard & Poor's Corporation
or Moody's Investors Service, Inc., and (iii) Bank's certificates of deposit
issued maturing no more than 1 year after issue.

     "PERMITTED LIENS" are:

     (a) Liens existing on the Effective Date and shown on the Schedule or
arising under this Agreement or other Loan Documents;

     (b) Liens for taxes, fees, assessments or other government charges or
levies, either not delinquent or being contested in good faith and for which
Borrower maintains adequate reserves on its Books, if they have no priority when
not paid over any of Bank's security interests;

     (c) Purchase money Liens (i) on Equipment acquired or held by Borrower or
its Subsidiaries incurred for financing the acquisition of the Equipment, or
(ii) existing on equipment when acquired, if the Lien is confined to the
property and improvements and the proceeds of the equipment;

     (d) Licenses or sublicenses granted in the ordinary course of Borrower's
business and any interest or title of a licensor or under any license or
sublicense, if the licenses and sublicenses permit granting Bank a security
interest;

     (e) Leases or subleases granted in the ordinary course of Borrower's
business, including in connection with Borrower's leased premises or leased
property;

     (f) Liens incurred in the extension, renewal or refinancing of the
indebtedness secured by Liens described in (a) through (c), but any extension,
renewal or replacement Lien must be limited to the property encumbered by the
existing Lien and the principal amount of the indebtedness may not increase.

     "PERSON" is any individual, sole proprietorship, partnership, limited
liability company, joint venture, company association, trust, unincorporated
organization, association, corporation, institution, public benefit corporation,
firm, joint stock company, estate, entity or government agency.

     "PRIME RATE" is Bank's most recently announced "prime rate," even if it is
not Bank's lowest rate.

     "QUICK ASSETS" is, on any date until three months after the Effective Date,
Borrower's consolidated, unrestricted cash and cash equivalents, plus all
Accounts; and, after three months after the Effective Date, Borrower's
consolidated, unrestricted cash and cash equivalents held at Bank, plus all
Accounts.

     "RESPONSIBLE OFFICER" is each of the Chief Executive Officer, the
President, the Chief Financial Officer and the Controller of Borrower.

     "REVOLVING MATURITY DATE" is the date 364 days from the Effective Date.

<PAGE>

     "RIGHTS", as applied to the Collateral, means the Borrower's rights and
interests in, and powers with respect to, that Collateral, whatever the nature
of those rights, interests and powers and, in any event, including Borrower's
power to transfer rights in such Collateral to Bank.

     "SCHEDULE" is any attached schedule of exceptions.

     "SUBORDINATED DEBT" is debt incurred by Borrower subordinated to Borrower's
indebtedness owed to Bank and which is reflected in a written agreement in a
manner and form acceptable to Bank and approved by Bank in writing.

     "SUBSIDIARY" is for any Person, any other business entity of which more
than 50% of the voting stock or other equity interests is owned or controlled,
directly or indirectly, by the Person or one or more Affiliates of the Person.

     "TANGIBLE NET WORTH" is, on any date, the consolidated total assets of
Borrower and its Subsidiaries minus, (i) any amounts attributable to (a)
goodwill, (b) intangible items such as unamortized debt discount and expense,
patents, trade and service marks and names, copyrights and research and
development expenses except prepaid expenses, and (c) reserves not already
deducted from assets, and (ii) Total Liabilities.

     "TOTAL LIABILITIES" is on any day, obligations that should, under GAAP, be
classified as liabilities on Borrower's consolidated balance sheet, including
all Indebtedness, and current portion Subordinated Debt allowed to be paid, but
excluding all other Subordinated Debt.

     "TRADEMARKS" are trademark and servicemark rights, registered or not,
applications to register and registrations and like protections, and the entire
goodwill of the business of Assignor connected with the trademarks.

BORROWER:

LIMELIGHT NETWORKS, INC.

By: /s/ William H. Rinehart
    ---------------------------------
Title: President & CEO

BANK:

SILICON VALLEY BANK

By: /s/ Travis D. Wood
    ---------------------------------
Title: VICE PRESIDENT
Effective Date: 4/15/05

<PAGE>

                                    EXHIBIT A

     The Collateral consists of all of Borrower's right, title and interest in
and to the following whether owned now or hereafter arising and whether the
Borrower has rights now or hereafter has rights therein and wherever located:

     All goods and equipment now owned or hereafter acquired, including, without
limitation, all machinery, fixtures, vehicles (including motor vehicles and
trailers), and any interest in any of the foregoing, and all attachments,
accessories, accessions, replacements, substitutions, additions, and
improvements to any of the foregoing, wherever located;

     All inventory, now owned or hereafter acquired, including, without
limitation, all merchandise, raw materials, parts, supplies, packing and
shipping materials, work in process and finished products including such
inventory as is temporarily out of Borrower's custody or possession or in
transit and including any returns upon any accounts or other proceeds, including
insurance proceeds, resulting from the sale or disposition of any of the
foregoing and any documents of title representing any of the above;

     All contract rights and general intangibles (as such definitions may be
amended from time to time according to the Code), now owned or hereafter
acquired, including, without limitation, goodwill, trademarks, servicemarks,
trade styles, trade names, patents, patent applications, leases, license
agreements, franchise agreements, blueprints, drawings, purchase orders,
customer lists, route lists, infringements, claims, computer programs, computer
discs, computer tapes, literature, reports, catalogs, design rights, income tax
refunds, payments of insurance and rights to payment of any kind,;

     All now existing and hereafter arising accounts, contract rights,
royalties, license rights and all other forms of obligations owing to Borrower
arising out of the sale or lease of goods, the licensing of technology or the
rendering of services by Borrower (as such definitions may be amended from time
to time according to the Code) whether or not earned by performance, and any and
all credit insurance, insurance (including refund) claims and proceeds,
guaranties, and other security therefor, as well as all merchandise returned to
or reclaimed by Borrower;

     All documents, cash, deposit accounts, securities, securities entitlements,
securities accounts, investment property, financial assets, letters of credit,
letter of credit rights, certificates of deposit, instruments and chattel paper
and electronic chattel paper now owned or hereafter acquired and Borrower's
Books relating to the foregoing;

     All copyright rights, copyright applications, copyright registrations and
like protections in each work of authorship and derivative work thereof, whether
published or unpublished, now owned or hereafter acquired; all trade secret
rights, including all rights to unpatented inventions, know-how, operating
manuals, license rights and agreements and confidential information, now owned
or hereafter acquired; all mask work or similar rights available for the
protection of semiconductor chips, now owned or hereafter acquired; all claims
for damages by way of any past, present and future infringement of any of the
foregoing; and

     All Borrower's Books relating to the foregoing and any and all claims,
rights and interests in any of the above and all substitutions for, additions
and accessions to and proceeds thereof.

<PAGE>

                                    EXHIBIT B

LOAN PAYMENT/ADVANCE REQUEST FORM
DEADLINE FOR SAME DAY PROCESSING IS 12:00 P.S.T.

FAX TO: _________                                          DATE: _______________

-    LOAN PAYMENT:

                       LIMELIGHT NETWORKS, INC. (Borrower)

     From Account #_______________________     To Account #_____________________
                     (Deposit Account #)                     (Loan Account #)

     Principal $___________________ and/or interest $___________________________

     All Borrower's representation and warranties in the Loan and Security
     Agreement are true, correct and complete in all material respects up to and
     including the date of the transfer request for a loan payment, but those
     representations and warranties expressly referring to another date shall be
     true, correct and complete in all material respects as of that date:

     AUTHORIZED SIGNATURE:                       Phone Number:
                           ---------------------               -----------------

-    LOAN ADVANCE:

     COMPLETE OUTGOING WIRE REQUEST SECTION BELOW IF ALL OR A PORTION OF THE
     FUNDS FROM THIS LOAN ADVANCE ARE FOR AN OUTGOING WIRE.

     From Account #_______________________     To Account #_____________________
                       (Loan Account #)                      (Deposit Account #)

     Amount of Advance $__________________

     All Borrower's representation and warranties in the Loan and Security
     Agreement are true, correct and complete in all material respects up to and
     including the date of the transfer request for an advance, but those
     representations and warranties expressly referring to another date shall
     be true, correct and complete in all material respects as of that date:

     AUTHORIZED SIGNATURE: _____________________ Phone Number: _________________

     OUTGOING WIRE REQUEST

     COMPLETE ONLY IF ALL OR A PORTION OF FUNDS FROM THE LOAN ADVANCE ABOVE ARE
     TO BE WIRED.

Deadline for same day processing is 12:00 pm, P.S.T.

     Beneficiary Name: ____________________    Amount of Wire: $________________

     Beneficiary Bank: ____________________    Account Number: _________________

     City and State: ____________________________

     Beneficiary Bank Transit                  Beneficiary Bank Code (Swift,
     (ABA) #: _____________                    Sort, Chip, etc.): ________

                                               (FOR INTERNATIONAL WIRE ONLY)

     Intermediary Bank: __________________     Transit (ABA) #: ________________

     For Further Credit to: ____________________________________________________

     Special instruction: ______________________________________________________

     By signing below, I (we) acknowledge and agree that my (our) funds transfer
     request shall be processed in accordance with and subject to the terms and
     conditions set forth in the agreements(s) covering funds transfer
     service(s), which agreements(s) were previously received and executed by
     me (us).

     Authorized Signature:               2nd Signature (If Required):
                           -----------                                ----------
     Print Name/Title:                   Print Name/Title:
                       ---------------                     ---------------------
     Telephone #                         Telephone #
                ----------------------              ----------------------------

<PAGE>

                     Schedule to Loan and Security Agreement

The exact correct corporate name of Borrower is (attach a copy of the formation
documents, e.g., articles, partnership agreement): _____________________________

Borrower's State of formation: __________________

Borrower has operated under only the following other names (if none, so state):

________________________________________________________________________________

All other address at which the Borrower does business are as follows (attach
additional sheets if necessary and include all warehouse addresses):

________________________________________________________________________________

Borrower has deposit accounts and/or investment accounts located only at the
following institutions:

________________________________________________________________________________

List Acct. Numbers: ____________________________________________________________

Liens existing on the Effective Date and disclosed to and accepted by Bank in
writing:
________________________________________________________________________________
________________________________________________________________________________
________________________________________________________________________________

Investments existing on the Effective Date and disclosed to and accepted by Bank
in writing:
________________________________________________________________________________
________________________________________________________________________________
________________________________________________________________________________

SUBORDINATED DEBT:

Indebtedness on the Effective Date and disclosed to and consented to by Bank in
writing:
________________________________________________________________________________
________________________________________________________________________________
________________________________________________________________________________

The following is a list of the Borrower's copyrights (including copyrights of
software) which are registered with the United States Copyright Office. (Please
include name of the copyright and registration number and attach a copy of the
registration):
________________________________________________________________________________
________________________________________________________________________________

The following is a list of all software which the Borrower sells, distributes or
licenses to others, which is not registered with the United States Copyright
Office. (Please include versions which are not registered:
________________________________________________________________________________

The following is a list of all of the Borrower's patents which are registered
with the United States Patent Office. (Please include name of the patent and
registration number and attach a copy of the registration.):
________________________________________________________________________________
________________________________________________________________________________

The following is a list of all of the Borrower's patents which are pending with
the United States Patent Office. (Please include name of the patent and a copy
of the application.):
________________________________________________________________________________

<PAGE>

The following is a list of all of the Borrower's registered trademarks. (Please
include name of the trademark and a copy of the registration.):
________________________________________________________________________________

Borrower is not subject to litigation which would have a material adverse effect
on the Borrower's financial condition, except the following (attach additional
comments, if needed):
________________________________________________________________________________

________________________________________________________________________________

Tax ID Number _________________________________

Organizational Number, if any: ________________
<PAGE>

                                    EXHIBIT C
                           BORROWING BASE CERTIFICATE

Borrower LIMELIGHT NETWORKS, INC.                    Bank: Silicon Valley Bank
                                                           14300 Northsight
                                                           Boulevard, Suite 203,
                                                           Scottsdale, Arizona
                                                           85260

Commitment Amount: $1,000,000

<TABLE>
<S>   <C>                                            <C>            <C>
ACCOUNTS RECEIVABLE
1.    Accounts Receivable Book Value as of
      _______________________                                       $___________
2.    Additions (please explain on reverse)                         $___________
3.    TOTAL ACCOUNTS RECEIVABLE                                     $___________

ACCOUNTS RECEIVABLE DEDUCTIONS (without
   duplication)
4.    Amounts over 90 days due                       $___________
5.    Balance of 50% over 90 day accounts            $___________
6.    Credit balances over 90 days                   $___________
7.    Concentration Limits                           $___________
8.    Foreign Accounts**                             $___________
9.    Federal Governmental Accounts                  $___________
10.   Contra Accounts                                $___________
11.   Promotion or Demo Accounts                     $___________
12.   Intercompany/Employee Accounts                 $___________
13.   Other (please explain on reverse)              $___________
14.   TOTAL ACCOUNTS RECEIVABLE DEDUCTIONS                          $___________
15.   Eligible Accounts (#3 minus #14)                              $___________
16.   LOAN VALUE OF ACCOUNTS (80% of #15)                           $___________
**    except for up to $125,000 from UK eligibles

BALANCES
17.   Maximum Loan Amount                            $___________
18.   Total Funds Available [Lesser of #17 or #16]                  $___________
19.   Present balance owing on Line of Credit        $___________
20.   Outstanding under Sublimits (LC or CM)         $___________
21.   RESERVE POSITION (#18 minus #19 and #20)                      $___________
</TABLE>

The undersigned represents and warrants that this is true, complete and correct,
and that the information in this Borrowing Base Certificate complies with the
representations and warranties in the Loan and Security Agreement between the
undersigned and Silicon Valley Bank.

COMMENTS:

LIMELIGHT NETWORKS, INC.

By:
    ---------------------------------
    Authorized Signer

<PAGE>

                                    EXHIBIT D
                             COMPLIANCE CERTIFICATE

TO:     SILICON VALLEY BANK
        14300 Northsight Boulevard, Suite 203
        Scottsdale, Arizona 85260

FROM:   LIMELIGHT NETWORKS, INC.

     The undersigned Responsible Officer of LIMELIGHT NETWORKS, INC.
("Borrower") certifies that under the terms and conditions of the Loan and
Security Agreement between Borrower and Bank (the "Agreement"), (i) Borrower is
in complete compliance for the period ending _____________________________ with
all required covenants except as noted below and (ii) all representations and
warranties in the Agreement are true and correct in all material respects on
this date. In addition, the undersigned certifies that Borrower, and each
Subsidiary, has timely filed all required tax returns and paid, or made adequate
provision to pay, all material taxes, except those being contested in good faith
with adequate reserves under GAAP. Attached are the required documents
supporting the certification. The Officer certifies that these are prepared in
accordance with Generally Accepted Accounting Principles (GAAP) consistently
applied from one period to the next except as explained in an accompanying
letter or footnotes. The Responsible Officer acknowledges that no borrowings may
be requested at any time or date of determination that Borrower is not in
compliance with any of the terms of the Agreement, and that compliance is
determined not just at the date this certificate is delivered.

  PLEASE INDICATE COMPLIANCE STATUS BY CIRCLING YES/NO UNDER "COMPLIES" COLUMN.

<TABLE>
<CAPTION>
REPORTING COVENANT                  REQUIRED                 COMPLIES
------------------                  --------                 --------
<S>                                 <C>                      <C>
Monthly financial statements + CC   Monthly within 20 days   Yes   No
Annual (Audited)                    FYE within 120 days      Yes   No
A/R & A/P Agings                    Monthly within 20 days   Yes   No
A/R Audit                           Initial and Annual       Yes   No
Borrowing Base Certificate          Monthly within 20 days   Yes   No
Annual financial projections        30 days prior to FYE     Yes   No
</TABLE>

<TABLE>
<CAPTION>
FINANCIAL COVENANT                       REQUIRED                ACTUAL       COMPLIES
-------------------                      --------                ------       --------
<S>                                      <C>                     <C>          <C>
Maintain on a Monthly Basis:
   Minimum Quick Ratio (Adjusted)        1.00:1.00 to 10/31/05   _____:1.00   Yes   No
                                         1.25:1.00 thereafter
   Minimum Debt Service Coverage Ratio   2.00:1.00               _____:1.00   Yes   No
</TABLE>

Have there been updates to Borrower's intellectual property?   Yes/No
Borrower only has deposit accounts located at the following institutions:
______________________________.
<PAGE>

COMMENTS REGARDING EXCEPTIONS: See Attached.

                                                     BANK USE ONLY

                                        Received by:
                                                     ---------------------------
Sincerely,                                               AUTHORIZED SIGNER
                                        Date:
                                              ----------------------------------
LIMELIGHT NETWORKS, INC.
                                        Verified:
                                                  ------------------------------
                                                         AUTHORIZED SIGNER

                                        Date:
-------------------------------------         ----------------------------------
SIGNATURE

-------------------------------------   Compliance Status:              Yes   No
TITLE

-------------------------------------
DATE

<PAGE>

                           LOAN MODIFICATION AGREEMENT

This Loan Modification Agreement is entered into as of July 21, 2005, by and
between SILICON VALLEY BANK, a California - chartered bank with its principal
place of business at 3003 Tasman Drive, Santa Clara, California 95054 and with a
loan production office at 14300 Northsight Blvd., Suite 203, Scottsdale, AZ
85260 ("Bank") and LIMELIGHT NETWORKS, INC., a Delaware corporation with its
principal place of business at 2220 W. 14th Street, Tempe, AZ 85281
("Borrower").

1. DESCRIPTION OF EXISTING INDEBTEDNESS: Among other indebtedness which may be
owing by Borrower to Bank, Borrower is or may be indebted to Bank pursuant to,
among other documents, a Loan and Security Agreement, dated April 15, 2005, as
it may be amended from time to time (the "Loan Agreement"). The Loan Agreement
provided for, among other things, a Committed Revolving Line in the original
principal amount of One Million Dollars ($1,000,000) and a Committed Equipment
Line in the original principal amount of Two Million Seven Hundred Fifty
Thousand Dollars ($2,750,000). Defined terms used but not otherwise defined
herein shall have the same meanings as set forth in the Loan Agreement.
Hereinafter, all indebtedness owing by Borrower to Bank shall be referred to as
the "Indebtedness."

2. DESCRIPTION OF COLLATERAL. Repayment of the Indebtedness is secured by the
Collateral, as described in the Loan Agreement and in the Intellectual Property
Security Agreement. Hereinafter, the above-described security documents,
together with all other documents securing repayment of the Indebtedness shall
be referred to as the "Security Documents". Hereinafter, the Security Documents,
together with all other documents evidencing or securing the Indebtedness shall
be referred to as the "Existing Loan Documents".

3. DESCRIPTION OF CHANGE IN TERMS.

     A. Modification(s) to Loan Agreement.

          1. Subsection (i) of Section 6.7 of the Loan Agreement entitled
          "Financial Covenants" is amended to read as follows:

                    Borrower will maintain as of the last day of each month:

                         (i) QUICK RATIO (ADJUSTED). A ratio of Quick Assets to
                    Current Liabilities (excluding investor/related party debt)
                    of at least 1.00 to 1.00 until April 30, 2006 and thereafter
                    at least 1.25 to 1.00.

          2. The following term in Section 13.1 entitled "Definitions" is hereby
          amended to read:

                    "COMMITTED EQUIPMENT LINE" is a Credit Extension of up to
               $4,750,000 of which $2,637,675.26 is available as of July 21,
               2005.

     B. Consent to Transaction.

          Borrower has notified Bank of Borrower's request to prepay existing
     Subordinated Debt owing to the Raciborski Family Foundation and to
     Ridgeline Capital, LLC which Subordinated Debt is subject to those certain
     Intercreditor and Subordination Agreements dated as of April 15, 2005 with
     such creditors (the "Transaction"). Borrower has requested that Bank
     consent to the Transaction for purposes of Section 7.8 of the Loan
     Agreement, which might otherwise constitute a default under the Loan
     Agreement if Bank does not provide its consent, and for purposes of such
     Intercreditor and Subordination Agreements. Bank's consent to the
     Transaction is specifically conditioned upon Borrower raising new
     Subordinated Debt (under an agreement satisfactory to Bank) from Partners
     for Growth, L.P., a Delaware limited partnership, in a minimum aggregate
     amount equal to, and the proceeds of which will be applied to, the
     Subordinated Debt

<PAGE>

     being prepaid to the Raciborski Family Foundation and to Ridgeline Capital,
     LLC. This Loan Modification Agreement will serve as Bank's consent to the
     Transaction solely for the purposes of Section 7.8 of the Loan Agreement.
     Bank's consent: (1) shall not limit or impair the Bank's right to demand
     strict performance of this covenant as set forth in the Loan Agreement
     following consummation of the Transaction; and (2) shall not limit or
     impair the Bank's right to demand strict performance of all other covenants
     and provisions set forth in the Loan Agreement, at all times

4. CONSISTENT CHANGES. The Existing Loan Documents are hereby amended wherever
necessary to reflect the changes described above.

5. PAYMENT OF LOAN FEE AND EXPENSES. Borrower shall pay to Bank a fee in the
amount of Ten Thousand and No/100 Dollars ($10,000.00) (the "Loan Fee") plus all
of Bank's reasonable out-of-pocket expenses in connection with this Loan
Modification Agreement.

6. NO DEFENSES. Borrower agrees that, as of the date hereof, it has no defenses
against the obligations to pay any amounts under the Indebtedness.

7. CONTINUING VALIDITY. Borrower understands and agrees that in modifying the
existing Indebtedness, Bank is relying upon Borrower's representations,
warranties, and agreements, as set forth in the Existing Loan Documents. Except
as expressly modified pursuant to this Loan Modification Agreement, the terms of
the Existing Loan Documents remain unchanged and in full force and effect.
Bank's agreement to modifications to the existing Indebtedness and the consent
to the Transaction pursuant to this Loan Modification Agreement in no way shall
obligate Bank to make any future consents, waivers or modifications to the
Indebtedness. Nothing in this Loan Modification Agreement shall constitute a
satisfaction of the Indebtedness. It is the intention of Bank and Borrower to
retain as liable parties all makers and endorsers of Existing Loan Documents,
unless the party is expressly released by Bank in writing. Unless expressly
released herein, no maker, endorser, or guarantor will be released by virtue of
this Loan Modification Agreement. The terms of this paragraph apply not only to
this Loan Modification Agreement, but also to all subsequent loan modification
agreements.

8. CONDITIONS. The effectiveness of this Loan Modification Agreement is
conditioned upon receipt by Bank of (a) the Loan Fee, and (b) a fully executed
counterpart hereof.

     This Loan Modification Agreement is executed as of the date first written
above.

BORROWER:                               BANK:

LIMELIGHT NETWORK, INC.                 SILICON VALLEY BANK

By: /s/ William H. Rinehart             By: /s/ Travis D. Wood
    ---------------------------------       ------------------------------------
Name: William H. Rinehart               Name: TRAVIS D. WOOD
Title: President & CEO                  Title: VICE PRESIDENT

<PAGE>

                           LOAN MODIFICATION AGREEMENT

This Loan Modification Agreement is entered into as of August 15, 2005, by and
between SILICON VALLEY BANK, a California - chartered bank with its principal
place of business at 3003 Tasman Drive, Santa Clara, California 95054 and with a
loan production office at 14300 Northsight Blvd., Suite 203, Scottsdale, AZ
85260 ("Bank") and LIMELIGHT NETWORKS, INC., a Delaware corporation with its
principal place of business at 2220 W. 14th Street, Tempe, AZ 85281
("Borrower").

1. DESCRIPTION OF EXISTING INDEBTEDNESS: Among other indebtedness which may be
owing by Borrower to Bank, Borrower is or may be indebted to Bank pursuant to,
among other documents, a Loan and Security Agreement, dated April 15, 2005, as
it may be amended from time to time (the "Loan Agreement"). The Loan Agreement
provided for, among other things, a Committed Revolving Line in the original
principal amount of One Million Dollars ($1,000,000) and a Committed Equipment
Line in the original principal amount of Two Million Seven Hundred Fifty
Thousand Dollars ($2,750,000) which was changed to $4,750,000 as of July 21,
2005. Defined terms used but not otherwise defined herein shall have the same
meanings as set forth in the Loan Agreement. Hereinafter, all indebtedness owing
by Borrower to Bank shall be referred to as the "Indebtedness."

2. DESCRIPTION OF COLLATERAL. Repayment of the Indebtedness is secured by the
Collateral, as described in the Loan Agreement and in the intellectual Property
Security Agreement. Hereinafter, the above-described security documents,
together with all other documents securing repayment of the Indebtedness shall
be referred to as the "Security Documents". Hereinafter, the Security Documents,
together with all other documents evidencing or securing the Indebtedness shall
be referred to as the "Existing Loan Documents".

3. DESCRIPTION OF CHANGE IN TERMS.

     A.   Modification(s) to Loan Agreement.

          1.   Section 6.7 of the Loan Agreement entitled "Financial Covenants"
               is amended to read as follows:

               6.7 FINANCIAL COVENANTS.

               Borrower will maintain as of the last day of each month:

               (i) QUICK RATIO (ADJUSTED). A ratio of Quick Assets to Current
               Liabilities (excluding investor/related party debt) of at least
               0.90 to 1.00 until October 31, 2005 and thereafter of at least
               1.00 to 1.00 until April 30, 2006 and thereafter of at least 1.25
               to 1.00.

               (i) DEBT SERVICE COVERAGE RATIO. A ratio of Borrower's (a)
               consolidated earnings before interest expense, income taxes,
               depreciation, amortization of intangible assets and other
               non-cash charges made to Borrower's income (all a determined by
               GAAP) minus unfunded capital expenditures for the preceding
               three-month period to (b) the principal and interest payments on
               debt due Bank paid and payable to Bank during the preceding
               three-month period of at least 2.50 to 1.00 until October 31,
               2005 and thereafter of at least 2.00 to 1.00, measured monthly on
               a rolling 3 month basis.

          2.   Exhibit D attached hereto shall be substituted for that attached
               to the Loan Agreement.

<PAGE>

     B.   Waiver of Financial Covenant Default.

          Bank hereby waives Borrower's existing default under the Loan
          Agreement by virtue of Borrower's failure to comply with the monthly
          Quick Ratio (Adjusted) financial covenant as of June 30, 2005. Bank's
          waiver of Borrower's compliance with this covenant shall apply only to
          the foregoing period. Accordingly, for the month ending July 31, 2005,
          Borrower shall be in compliance with this covenant.

          Bank's agreement to waive the above-described default (1) in no way
          shall be deemed an agreement by the Bank to waive Borrower's
          compliance with the above-described covenant as of all other dates and
          (2) shall not limit or impair the Bank's right to demand strict
          performance of this covenant as of all other dates and (3) shall not
          limit or impair the Bank's right to demand strict performance of all
          other covenants as of any date.

4. CONSISTENT CHANGES. The Existing Loan Documents are hereby amended wherever
necessary to reflect the changes described above.

5. PAYMENT OF LOAN FEE AND EXPENSES. Borrower shall pay to Bank a fee in the
amount of One Thousand Five Hundred and No/100 Dollars ($1,500.00) (the "Loan
Fee") plus all of Bank's reasonable out-of-pocket expenses in connection with
this Loan Modification Agreement.

6. NO DEFENSES. Borrower agrees that, as of the date hereof, it has no defenses
against the obligations to pay any amounts under the Indebtedness.

7. CONTINUING VALIDITY. Borrower understands and agrees that in modifying the
existing indebtedness, Bank is relying upon Borrower's representations,
warranties, and agreements, as set forth in the Existing Loan Documents. Except
as expressly modified pursuant to this Loan Modification Agreement, the terms of
the Existing Loan Documents remain unchanged and in full force and effect.
Bank's agreement to modifications to the existing Indebtedness and the waiver
contained in this Loan Modification Agreement in no way shall obligate Bank to
make any future consents, waivers or modifications to the indebtedness. Nothing
in this Loan Modification Agreement shall constitute a satisfaction of the
indebtedness. It is the intention of Bank and Borrower to retain as liable
parties all makers and endorsers of Existing Loan Documents, unless the party is
expressly released by Bank in writing. Unless expressly released herein, no
maker, endorser, or guarantor will be released by virtue of this Loan
Modification Agreement. The terms of this paragraph apply not only to this Loan
Modification Agreement, but also to all subsequent loan modification agreements.

8. CONDITIONS. The effectiveness of this Loan Modification Agreement is
conditioned upon receipt by Bank of (a) the Loan Fee, and (b) a fully executed
counterpart hereof.

     This Loan Modification Agreement is executed as of the date first written
above.

BORROWER:                               BANK:

LIMELIGHT NETWORK, INC.                 SILICON VALLEY BANK

By: /s/ William H. Rinehart             By: /s/ Travis D. Wood
    ---------------------------------       ------------------------------------
Name: William H. Rinehart               Name: TRAVIS D. WOOD
Title: President & CEO                  Title: VICE PRESIDENT
<PAGE>

                                 THIRD AMENDMENT
                                       TO
                           LOAN AND SECURITY AGREEMENT

     THIS THIRD AMENDMENT to Loan and Security Agreement (this "Amendment") is
entered into this 27th day of October, 2005, by and between Silicon Valley Bank
("Bank") and LIMELIGHT NETWORKS, INC., a Delaware corporation ("Borrower") whose
address is 2220 West 14th Street, Tempe, AZ 85281.

                                    RECITALS

     A. Bank and Borrower have entered into that certain Loan and Security
Agreement dated as of April 15, 2005, as amended (as the same may from time to
time be further amended, modified, supplemented or restated, the "Loan
Agreement").

     B. Bank has extended credit to Borrower for the purposes permitted in the
Loan Agreement.

     C. Borrower has requested that Bank amend the Loan Agreement to provide
additional equipment term loan financing.

     D. Bank has agreed to so amend certain provisions of the Loan Agreement,
but only to the extent, in accordance with the terms, subject to the conditions
and in reliance upon the representations and warranties set forth below.

                                    AGREEMENT

     NOW, THEREFORE, in consideration of the foregoing recitals and other good
and valuable consideration, the receipt and adequacy of which is hereby
acknowledged, and intending to be legally bound, the parties hereto agree as
follows:

     1. DEFINITIONS. Capitalized terms used but not defined in this Amendment
shall have the meanings given to them in the Loan Agreement.

     2. AMENDMENTS TO LOAN AGREEMENT.

          2.1 SECTION 2.1.5 (EQUIPMENT 2 FACILITY). A new Section 2.1.5 is added
to the Loan Agreement as follows:

          2.1.5 Equipment 2 Facility.

          (a) Through September 30, 2006 (the "Equipment 2 Availability End
     Date"), Bank will make advances (each an "Equipment 2 Advance" and,
     collectively, "Equipment 2 Advances") not exceeding the Committed Equipment
     2 Line. The Equipment 2 Advances may only be used to finance or refinance
     Equipment purchased on or after 90 days before the date of each Equipment 2
     Advance and may not exceed 100% of the equipment invoice excluding taxes,
     shipping, warranty charges, freight discounts and installation expense.
     Soft costs

                                                                               1

<PAGE>

     may constitute up to $500.000 of the aggregate Equipment 2 Advances. Each
     Equipment 2 Advance must be for a minimum of $100,000. The number of
     Equipment 2 Advances is limited to 1 per month.

          (b) Each Equipment 2 Advance made prior to 07/01/2006 shall amortize
     and be payable in 24 equal monthly payments of principal and interest
     beginning 07/31/2006 and continuing on the last day of each month
     thereafter. Until the first equal monthly payment of principal and interest
     is due on each Equipment 2 Advance made prior to 07/01/2006, interest only
     shall be payable monthly beginning on the last day of the month in which
     the Equipment 2 Advance is made and continuing on the last day of each
     month thereafter. Each Equipment 2 Advance made on or after 07/01/2006
     shall amortize and be payable in 24 equal monthly payments of principal and
     interest beginning 30 days following such Equipment 2 Advance and
     continuing on the same day of each month thereafter. The final payment due
     on the applicable Equipment 2 Maturity Date shall include all outstanding
     principal and all accrued unpaid interest. Equipment 2 Advances when repaid
     may not be re-borrowed.

          (c) To obtain an Equipment 2 Advance, Borrower must notify Bank (the
     notice is irrevocable) by facsimile no later than 12:00 p.m. Pacific time
     one Business Day before the day on which the Equipment 2 Advance is to be
     made. The notice in the form of Exhibit B (Payment/Advance Form) must be
     signed by a Responsible Officer or designee and include a copy of invoices
     for the Equipment being financed and such additional information as Bank
     may reasonably request.

          2.2 SECTION 2.4 (INTEREST RATE, PAYMENTS). The second sentence of
subsection (a) of Section 2.4 is amended in its entirety and replaced with the
following:

     Equipment Advances and Equipment 2 Advances accrue interest on the
     outstanding principal balance at a per annum rate equal to the Basic Rate.

The last sentence of subsection (b) of Section 2.4 is amended in its entirety
and replaced with the following:

     If any change in the law increases Bank's expenses or decreases its return
     from the Equipment Advances or the Equipment 2 Advances, Borrower will pay
     Bank upon request the amount of such increase or decrease.

          2.3 SECTION 2.6 (FEES). Subsection (c) entitled "Early Termination
Fees" of Section 2.6 is amended by adding the following clause (beginning in the
third line from the end immediately before the words "provided that"):

     and a fully earned, non-refundable early termination fee of one percent
     (1%) of the outstanding principal balance of all Equipment 2 Advances shall
     be due upon voluntary or involuntary payment in full of Borrower's
     Obligations under the

                                                                               2

<PAGE>

     Committed Equipment 2 Line prior to the relevant Equipment 2 Maturity Dates
     and termination of Bank's obligation to lend the undisbursed portion of
     such Obligations under the Committed Equipment 2 Line;

          2.4 SECTION 13 (DEFINITIONS). The following terms and their respective
definitions set forth in SECTION 13.1 are amended in their entirety and replaced
with the following:

          "BASIC RATE" is, as of the date of the relevant Equipment Advance or
     Equipment 2 Advance, the per annum rate of interest (based on a year of 360
     days) equal to the sum of (a) the U.S. Treasury note yield to maturity for
     a term equal to 36 months as quoted in The Wall Street Journal on the day
     of the Equipment Advance, plus (b) 4.25%; provided that, for any Equipment
     2 Advance made on or after July 1, 2006, it is, as of the date of the
     relevant Equipment 2 Advance, the per annum rate of interest (based on a
     year of 360 days) equal to the sum of (a) the U.S. Treasury note yield to
     maturity for a term equal to 24 months as quoted in The Wall Street Journal
     on the day of the Equipment Advance, plus (b) 4.25%.

          "CREDIT EXTENSION" is each Advance, Equipment Advance, Equipment 2
     Advance, Letter of Credit, or any other extension of credit by Bank for
     Borrower's benefit.

          2.5 SECTION 13 (DEFINITIONS). The following terms and their respective
definitions set forth in SECTION 13.1 are added and inserted in their
appropriate places:

          "COMMITTED EQUIPMENT 2 LINE" is a Credit Extension of up to
     $2,500,000.

          "EQUIPMENT 2 ADVANCE" is defined in Section 2.1.5.

          "EQUIPMENT 2 AVAILABILITY END DATE" is defined in Section 2.1.5.

          "EQUIPMENT 2 MATURITY DATE" is June 30, 2008 for any Equipment 2
     Advance made prior to July 1, 2006; and for each Equipment 2 Advance made
     on or after July 1, 2006, it is the date 24 months after each such
     Equipment 2 Advance, but no later than September 30, 2008 as to the last
     Equipment 2 Advance.

     3. LIMITATION OF AMENDMENTS.

          3.1 The amendments set forth in SECTION 2, above, are effective for
the purposes set forth herein and shall be limited precisely as written and
shall not be deemed to (a) be a consent to any amendment, waiver or modification
of any other term or condition of any Loan Document, or (b) otherwise prejudice
any right or remedy which

                                                                               3

<PAGE>

Bank may now have or may have in the future under or in connection with any Loan
Document.

          3.2 This Amendment shall be construed in connection with and as part
of the Loan Documents and all terms, conditions, representations, warranties,
covenants and agreements set forth in the Loan Documents, except as herein
amended, are hereby ratified and confirmed and shall remain in full force and
effect.

     4. REPRESENTATIONS AND WARRANTIES. To induce Bank to enter into this
Amendment, Borrower hereby represents and warrants to Bank as follows:

          4.1 Immediately after giving effect to this Amendment (a) the
representations and warranties contained in the Loan Documents are true,
accurate and complete in all material respects as of the date hereof (except to
the extent such representations and warranties relate to an earlier date, in
which case they are true and correct as of such date), and (b) to Borrower's
knowledge no Event of Default has occurred and is continuing;

          4.2 Borrower has the power and authority to execute and deliver this
Amendment and to perform its obligations under the Loan Agreement, as amended by
this Amendment;

          4.3 The organizational documents of Borrower delivered to Bank on the
Effective Date remain true, accurate and complete and have not been amended,
supplemented or restated and are and continue to be in full force and effect;

          4.4 The execution and delivery by Borrower of this Amendment and the
performance by Borrower of its obligations under the Loan Agreement, as amended
by this Amendment, have been duly authorized;

          4.5 The execution and delivery by Borrower of this Amendment and the
performance by Borrower of its obligations under the Loan Agreement, as amended
by this Amendment, do not and will not contravene (a) any law or regulation
binding on or affecting Borrower, (b) any contractual restriction with a Person
binding on Borrower, (c) any order, judgment or decree of any court or other
governmental or public body or authority, or subdivision thereof, binding on
Borrower, or (d) the organizational documents of Borrower;

          4.6 The execution and delivery by Borrower of this Amendment and the
performance by Borrower of its obligations under the Loan Agreement, as amended
by this Amendment, do not require any order, consent, approval, license,
authorization or validation of, or filing, recording or registration with, or
exemption by any governmental or public body or authority, or subdivision
thereof, binding on either Borrower, except as already has been obtained or
made; and

          4.7 This Amendment has been duly executed and delivered by Borrower
and is the binding obligation of Borrower, enforceable against Borrower in
accordance with its terms, except as such enforceability may be limited by
bankruptcy,

                                                                               4

<PAGE>

insolvency, reorganization, liquidation, moratorium or other similar laws of
general application and equitable principles relating to or affecting creditors'
rights.

     5. COUNTERPARTS. This Amendment may be executed in any number of
counterparts and all of such counterparts taken together shall be deemed to
constitute one and the same instrument.

     6. EFFECTIVENESS. This Amendment shall be deemed effective upon (a) the due
execution and delivery to Bank of this Amendment by each party hereto, (b)
Borrower's payment of a fee in an amount equal to $12,500.00, (c) Bank's receipt
of an Acknowledgment of Amendment and Reaffirmation of Guaranty substantially in
the form attached hereto as Schedule 1, duly executed and delivered by each
Guarantor, and (d) Bank's receipt of an additional Warrant issued by Borrower
entitling Bank to purchase 171,875 shares of common stock of Borrower at an
exercise price of $0.40 per share, with such Warrant to be on the same terms as
the Warrant for 83,333 shares issued by Borrower to Bank and dated with an Issue
Date of August 31, 2005.

     IN WITNESS WHEREOF, the parties hereto have caused this Amendment to be
duly executed and delivered as of the date first written above.

BANK                                    BORROWER

SILICON VALLEY BANK                     LIMELIGHT NETWORKS, INC.

By: /s/ Travis D. Wood                  By: /s/ William H. Rinehart
    ---------------------------------       ------------------------------------
Name: TRAVIS D. WOOD                    Name: William H. Rinehart
Title: VICE PRESIDENT                   Title: President & CEO

                                                                               5

<PAGE>

                                FOURTH AMENDMENT
                                       TO
                           LOAN AND SECURITY AGREEMENT

     THIS FOURTH AMENDMENT to Loan and Security Agreement (this "Amendment") is
entered into this 24th day of February, 2006, by and between Silicon Valley Bank
("Bank") and LIMELIGHT NETWORKS, INC., a Delaware corporation ("Borrower") whose
address is 2220 West 14th Street, Tempe, AZ 85281.

                                    RECITALS

     A. Bank and Borrower have entered into that certain Loan and Security
Agreement dated as of April 15, 2005, as amended (as the same may from time to
time be further amended, modified, supplemented or restated, the "Loan
Agreement").

     B. Bank has extended credit to Borrower for the purposes permitted in the
Loan Agreement.

     C. Borrower has requested that Bank further amend the Loan Agreement to
increase and extend the Committed Revolving Line and to provide additional
equipment term loan financing beyond that which was provided by the Third
Amendment to Loan and Security Agreement dated October 27, 2005.

     D. Bank has agreed to so amend certain provisions of the Loan Agreement,
but only to the extent, in accordance with the terms, subject to the conditions
and in reliance upon the representations and warranties set forth below.

                                    AGREEMENT

     NOW, THEREFORE, in consideration of the foregoing recitals and other good
and valuable consideration, the receipt and adequacy of which is hereby
acknowledged, and intending to be legally bound, the parties hereto agree as
follows:

     1. DEFINITIONS. Capitalized terms used but not defined in this Amendment
shall have the meanings given to them in the Loan Agreement.

     2. AMENDMENTS TO LOAN AGREEMENT.

          2.1 SECTION 2.1.6 (EQUIPMENT 3 FACILITY). A new Section 2.1.6 is added
to the Loan Agreement as follows:

          2.1.6 Equipment 3 Facility.

          (a) Through September 30, 2006 (the "Equipment 3 Availability End
     Date") but subject to subsection (c) of this Section 2.1.6 below, Bank will
     make advances (each an "Equipment 3 Advance" and, collectively, "Equipment
     3 Advances") not exceeding the Committed Equipment 3 Line. The Equipment 3
     Advances may only be used to finance or refinance Equipment purchased on or

                                                                               1

<PAGE>

     after 90 days before the date of each Equipment 3 Advance and may not
     exceed 100% of the equipment invoice excluding taxes, shipping, warranty
     charges, freight discounts and installation expense. Soft costs may
     constitute up to $500,000 of the aggregate Equipment 3 Advances. Each
     Equipment 3 Advance must be for a minimum of $100,000. The number of
     Equipment 3 Advances is limited to 1 per month.

          (b) Each Equipment 3 Advance made prior to 09/30/2006 shall amortize
     and be payable in 24 equal monthly payments of principal and interest
     beginning 10/31/2006 and continuing on the last day of each month
     thereafter. Until the first equal monthly payment of principal and interest
     is due on each Equipment 3 Advance made prior to 09/30/2006, interest only
     shall be payable monthly beginning on the last day of the month in which
     the Equipment 3 Advance is made and continuing on the last day of each
     month thereafter. Each Equipment 3 Advance made on 09/30/2006 shall
     amortize and be payable in 24 equal monthly payments of principal and
     interest beginning 10/31/2006 and continuing on the same day of each month
     thereafter. The final payment due on the applicable Equipment 3 Maturity
     Date shall include all outstanding principal and all accrued unpaid
     interest. Equipment 3 Advances when repaid may not be re-borrowed.

          (c) Bank has no obligation to make any Equipment 3 Advance until
     Borrower has reported EBITDA of not less than $1,500,000 for the months of
     January and February, 2006, combined, as reflected in the monthly financial
     statements delivered to Bank pursuant to Section 6.2 hereof. As used herein
     "EBITDA" means consolidated earnings before interest expense, income taxes,
     depreciation, amortization of intangible assets and other non-cash charges
     made to Borrower's income (all a determined by GAAP).

          (d) To obtain an Equipment 3 Advance, Borrower must notify Bank (the
     notice is irrevocable) by facsimile no later than 12:00 p.m. Pacific time
     one Business Day before the day on which the Equipment 3 Advance is to be
     made. The notice in the form of Exhibit B (Payment/Advance Form) must be
     signed by a Responsible Officer or designee and include a copy of invoices
     for the Equipment being financed and such additional information as Bank
     may reasonably request.

          2.2 SECTION 2.4 (INTEREST RATE, PAYMENTS). The second sentence of
subsection (a) of Section 2.4 is amended in its entirety and replaced with the
following:

     Equipment Advances and Equipment 2 Advances and Equipment 3 Advances accrue
     interest on the outstanding principal balance at a per annum rate equal to
     the Basic Rate.

The last sentence of subsection (b) of Section 2.4 is amended in its entirety
and replaced with the following:

                                                                               2

<PAGE>

     If any change in the law increases Bank's expenses or decreases its return
     from the Equipment Advances or the Equipment 2 Advances or the Equipment 3
     Advances, Borrower will pay Bank upon request the amount of such increase
     or decrease.

          2.3 SECTION 2.6 (FEES). Subsection (c) entitled "Early Termination
Fees" of Section 2.6 is amended by adding the following clause (beginning
immediately before the words "provided that"):

     and a fully earned, non-refundable early termination fee of one percent
     (1%) of the outstanding principal balance of all Equipment 3 Advances shall
     be due upon voluntary or involuntary payment in full of Borrower's
     Obligations under the Committed Equipment 3 Line prior to the relevant
     Equipment 3 Maturity Dates and termination of Bank's obligation to lend the
     undisbursed portion of such Obligations under the Committed Equipment 3
     Line;

          2.4 SECTION 13 (DEFINITIONS). The following terms and their respective
definitions set forth in SECTION 13.1 are amended in their entirety and replaced
with the following:

          "BASIC RATE" is, as of the date of the relevant Equipment Advance or
     Equipment 2 Advance or Equipment 3 Advance, the per annum rate of interest
     (based on a year of 360 days) equal to the sum of (a) the U.S. Treasury
     note yield to maturity for a term equal to 36 months as quoted in The Wall
     Street Journal on the day of the Equipment Advance, plus (b) 4.25%;
     provided, that, for any Equipment 3 Advance made on September 30, 2006, it
     is, as of the date of any such Equipment 3 Advance, the per annum rate of
     interest (based on a year of 360 days) equal to the sum of (a) the U.S.
     Treasury note yield to maturity for a term equal to 24 months as quoted in
     The Wall Street Journal on the day of the Equipment Advance, plus (b)
     4.25%.

          "COMMITTED REVOLVING LINE" is an Advance of up to $1,500,000.

          "CREDIT EXTENSION" is each Advance, Equipment Advance, Equipment 2
     Advance, Equipment 3 Advance, Letter of Credit, or any other extension of
     credit by Bank for Borrower's benefit.

          "REVOLVING MATURITY DATE" is April 13, 2007.

          2.5 SECTION 13 (DEFINITIONS). The following terms and their respective
definitions set forth in SECTION 13.1 are added and inserted in their
appropriate places:

          "COMMITTED EQUIPMENT 3 LINE" is a Credit Extension of up to
     $2,500,000.

                                                                               3
<PAGE>

          "EQUIPMENT 3 ADVANCE" is defined in Section 2.1.6.

          "EQUIPMENT 3 AVAILABILITY END DATE" is defined in Section 2.1.6.

          "EQUIPMENT 3 MATURITY DATE" is September 30, 2008 for any Equipment 3
     Advance made on or prior to September 30, 2006.

     3. LIMITATION OF AMENDMENTS.

          3.1 The amendments set forth in SECTION 2, above, are effective for
the purposes set forth herein and shall be limited precisely as written and
shall not be deemed to (a) be a consent to any amendment, waiver or modification
of any other term or condition of any Loan Document, or (b) otherwise prejudice
any right or remedy which Bank may now have or may have in the future under or
in connection with any Loan Document.

          3.2 This Amendment shall be construed in connection with and as part
of the Loan Documents and all terms, conditions, representations, warranties,
covenants and agreements set forth in the Loan Documents, except as herein
amended, are hereby ratified and confirmed and shall remain in full force and
effect.

     4. REPRESENTATIONS AND WARRANTIES. To induce Bank to enter into this
Amendment, Borrower hereby represents and warrants to Bank as follows:

          4.1 Immediately after giving effect to this Amendment (a) the
representations and warranties contained in the Loan Documents are true,
accurate and complete in all material respects as of the date hereof (except to
the extent such representations and warranties relate to an earlier date, in
which case they are true and correct as of such date), and (b) to Borrower's
knowledge no Event of Default has occurred and is continuing;

          4.2 Borrower has the power and authority to execute and deliver this
Amendment and to perform its obligations under the Loan Agreement, as amended by
this Amendment;

          4.3 The organizational documents of Borrower delivered to Bank on the
Effective Date remain true, accurate and complete and have not been amended,
supplemented or restated and are and continue to be in full force and effect;

          4.4 The execution and delivery by Borrower of this Amendment and the
performance by Borrower of its obligations under the Loan Agreement, as amended
by this Amendment, have been duly authorized;

          4.5 The execution and delivery by Borrower of this Amendment and the
performance by Borrower of its obligations under the Loan Agreement, as amended
by this Amendment, do not and will not contravene (a) any law or regulation
binding on or affecting Borrower, (b) any contractual restriction with a Person
binding on Borrower, (c) any order, judgment or decree of any court or other
governmental or public body or

                                                                               4

<PAGE>

authority, or subdivision thereof, binding on Borrower, or (d) the
organizational documents of Borrower;

          4.6 The execution and delivery by Borrower of this Amendment and the
performance by Borrower of its obligations under the Loan Agreement, as amended
by this Amendment, do not require any order, consent, approval, license,
authorization or validation of, or filing, recording or registration with, or
exemption by any governmental or public body or authority, or subdivision
thereof, binding on either Borrower, except as already has been obtained or
made; and

          4.7 This Amendment has been duly executed and delivered by Borrower
and is the binding obligation of Borrower, enforceable against Borrower in
accordance with its terms, except as such enforceability may be limited by
bankruptcy, insolvency, reorganization, liquidation, moratorium or other similar
laws of general application and equitable principles relating to or affecting
creditors' rights.

     5. COUNTERPARTS. This Amendment may be executed in any number of
counterparts and all of such counterparts taken together shall be deemed to
constitute one and the same instrument.

     6. EFFECTIVENESS. This Amendment shall be deemed effective upon (a) the due
execution and delivery to Bank of this Amendment by each party hereto, (b)
Borrower's payment of a fee in an amount equal to $15,000, (c) Bank's receipt
of an Acknowledgment of Amendment and Reaffirmation of Guaranty substantially
in the form attached hereto as Schedule 1, duly executed and delivered by each
Guarantor, and (d) Bank's receipt of an additional Warrant issued by Borrower
entitling Bank to purchase 171,875 shares of common stock of Borrower at an
exercise price of $0.40 per share, with such Warrant to be on the same terms as
the Warrant for 171,875 shares issued by Borrower to Bank and dated with an
Issue Date of October 20, 2005.

     IN WITNESS WHEREOF, the parties hereto have caused this Amendment to be
duly executed and delivered as of the date first written above.

BANK                                    BORROWER

SILICON VALLEY BANK                     LIMELIGHT NETWORKS, INC.

By: /s/ TRAVIS D WOOD                   By: /s/ William H Rinehart
    ---------------------------------       ------------------------------------
Name: TRAVIS D WOOD                     Name: William H Rinehart
Title: VICE PRESIDENT                   Title: President & CEO

                                                                               5

<PAGE>

                                 FIFTH AMENDMENT
                                       TO
                           LOAN AND SECURITY AGREEMENT

     THIS FIFTH AMENDMENT to Loan and Security Agreement (this "Amendment") is
entered into this 10 day of November, 2006, by and between SILICON VALLEY BANK
("Bank") and LIMELIGHT NETWORKS, INC., a Delaware corporation ("Borrower") whose
address is 2220 West 14th Street, Tempe, AZ 85281.

                                    RECITALS

     A. Bank and Borrower have entered into that certain Loan and Security
Agreement dated as of April 15, 2005, as amended (as the same may from time to
time be further amended, modified, supplemented or restated, the "Loan
Agreement").

     B. Bank has extended credit to Borrower for the purposes permitted in the
Loan Agreement.

     C. Borrower has requested that Bank further amend the Loan Agreement to
increase and extend the Committed Revolving Line to support working capital
requirements and to refinance existing debt to Bank and to provide additional
equipment term loan financing beyond that which was provided by the original
Loan Agreement, the Third Amendment to Loan and Security Agreement dated October
27, 2005 and the Fourth Amendment to Loan and Security Agreement dated February
24, 2006, to finance new and used equipment and related software.

     D. Bank has agreed to so amend certain provisions of the Loan Agreement,
but only to the extent, in accordance with the terms, subject to the conditions
and in reliance upon the representations and warranties set forth below.

                                    AGREEMENT

     NOW, THEREFORE, in consideration of the foregoing recitals and other good
and valuable consideration, the receipt and adequacy of which is hereby
acknowledged, and intending to be legally bound, the parties hereto agree as
follows:

     1. DEFINITIONS. Capitalized terms used but not defined in this Amendment
shall have the meanings given to them in the Loan Agreement.

     2. AMENDMENTS TO LOAN AGREEMENT.

          2.1 Section 2.1.1 (Revolving Advances) and Section 2.1.2 (Equipment
Facility). Sections 2.1.1 and 2.1.2 are amended entirely and replaced with the
following:

     2.1.1 Revolving Advances

          (a) (I) Bank will make Revolving Advances up to an aggregate amount of
$1,000,000 and (II) thereafter Bank will make Revolving Advances (that exceed
$1,000,000 in the aggregate) up to an aggregate amount not exceeding (i) the
lesser of (A) S4,000,000, or (B) the Borrowing Base, minus (ii) the amount of
all outstanding Letters of Credit (including drawn but unreimbursed Letters of
Credit), and minus (iii) the amount of utilized Cash Management Services covered
under the Cash Management Services Sublimit. Amounts borrowed under this Section
may be repaid and reborrowed during the term of this Agreement.

          (b) To obtain a Revolving Advance, Borrower must notify Bank as
provided in Section 3.4(a).

<PAGE>

          (c) The Committed Revolving Line terminates on the Revolving Maturity
Date, when all Revolving Advances are immediately payable. Interest on the
Committed Revolving Line is payable monthly.

     2.1.2 Equipment Facility.

          (a) Until the close of business December 31, 2008, Bank will make
advances (each an "Equipment Advance" and, collectively, "Equipment Advances")
not exceeding the Committed Equipment Line. The Equipment Advances may only be
used to finance or refinance Eligible Equipment purchased on or after 90 days
before the date of each Equipment Advance and may not exceed 100% of the
equipment invoices including the following soft costs ("Soft Costs") relating to
such Equipment being financed by such Equipment Advance: taxes, shipping,
warranty charges, freight discounts and installation expense. Soft Costs may
constitute up to $2,500,000 of the aggregate Equipment Advances. Each Equipment
Advance (except the final Equipment Advance) must be for a minimum of $3,000,000
and the number of Equipment Advances is limited to eight (8). Notwithstanding
the foregoing, (i) upon or promptly after the date the Fifth Amendment to Loan
and Security Agreement relating to this Agreement becomes effective (the "Fifth
Effective Date"), one Equipment Advance in the amount of the then existing debt
to Bank for the equipment loans made by Bank to Borrower prior to such Fifth
Effective Date (approximately $7,500,000) (the "Repayment Advance") shall be
advanced hereunder and (ii) one Equipment Advance in the aggregate amount of
Eligible Equipment purchases made since June 1, 2006 and up to the Fifth
Effective Date shall be advanced hereunder on or before November 30, 2006,
provided that invoices for such Eligible Equipment dated within 150 days prior
the date of such Equipment Advance are provided to Bank on or prior to the date
of such Equipment Advance.

          (b) Each Equipment Advance shall bear interest payable monthly
commencing 30 days following such Equipment Advance until the date which is six
(6) months following such Equipment Advance, and such Equipment Advance shall
then amortize and be payable in 54 consecutive, equal monthly payments of
principal plus accrued interest beginning on the date six months following such
Equipment Advance and continuing on the same day of each month thereafter. The
final payment due on the applicable Equipment Maturity Date shall include all
outstanding principal and all accrued unpaid interest. After repayment, no
Equipment Advances may be re-borrowed.

          (c) To obtain an Equipment Advance, Borrower must notify Bank as
provided in Section 3.4(a) and include a copy of invoices for the Equipment
being financed, except in the case of the Repayment Advance, and such
additional information as Bank may reasonably request.

          2.2 Section 2.1.3 (Letters of Credit Sublimit) and Section 2.1.4 (Cash
Management Services Sublimit). Sections 2.1.3 and 2.1.4 are each amended by
changing the dollar amount of "$500,000" in each place where it appears to the
dollar amount of "$1,000,000"; and by changing the term "Advances" in each place
where it appears to the term "Revolving Advances".

          2.3 Section 2.1.5 (Equipment 2 Facility) and Section 2.1.6 (Equipment
3 Facility). Sections 2.1.5 and 2.1.6 are deleted entirely.

          2.4 Section 2.3 (Overadvances) and Section 2.4 (Interest Rate,
Payments). Sections 2.3 and 2.4 are amended entirely and replaced with the
following:

          2.3 General Provisions Relating to the Advances; Overadvances.

     (a) Each Advance shall, at Borrower's option in accordance with the terms
of this Agreement, be either in the form of a Prime Rate Advance or a LIBOR
Advance; provided that in no event shall Borrower maintain at any time LIBOR
Advances having more than one Interest Period per Advance. Borrower shall pay
interest accrued on the Advances at the rates and in the manner set forth in
Section 2.4{b).

                                                                               2

<PAGE>

     (b) If Borrower's Obligations for Revolving Advances made under Section
2.1.1(a)(II) and under Sections 2.1.3, and 2.1.4 exceed the lesser of either (i)
$4,000,000 or (ii) the Borrowing Base, Borrower must promptly pay Bank the
excess.

          2.4 Payment of Interest on the Credit Extensions.

     (a) Computation of Interest. Interest on the Credit Extensions and all fees
payable hereunder shall be computed on the basis of a 360-day year and the
actual number of days elapsed in the period during which such interest accrues.
In computing interest on any Credit Extension, the date of the making of such
Credit Extension shall be included and the date of payment shall be excluded;
provided, however, that if any Credit Extension is repaid on the same day on
which it is made, such day shall be included in computing interest on such
Credit Extension.

     (b) Advances. Each Advance shall bear interest on the outstanding principal
amount thereof from the date when made, continued or converted until paid in
full at a rate per annum equal to the Prime Rate plus the Prime Rate Margin or
the LIBOR Rate plus the LIBOR Rate Margin, as the case may be. On and after the
expiration of any Interest Period applicable to any LIBOR Advance outstanding on
the date of occurrence of an Event of Default or acceleration of the
Obligations, the Effective Amount of such LIBOR Advance shall, during the
continuance of such Event of Default or after acceleration, bear interest at a
rate per annum equal to the Prime Rate plus five percent (5.00%). Pursuant to
the terms hereof, interest on each Advance shall be paid in arrears on each
Interest Payment Date. Interest shall also be paid on the date of any prepayment
of any Advance pursuant to this Agreement for the portion of any Advance so
prepaid and upon payment (including prepayment) in full thereof. All accrued but
unpaid interest on the Advances shall be due and payable on the applicable
maturity date.

     (c) Default Interest. Except as otherwise provided in Section 2.4(b), after
an Event of Default, Obligations shall bear interest five percent (5.00%) above
the rate effective immediately before the Event of Default (the "DEFAULT RATE").
Payment or acceptance of the increased interest provided in this Section 2.4(c)
is not a permitted alternative to timely payment and shall not constitute a
waiver of any Event of Default or otherwise prejudice or limit any rights or
remedies of Bank.

     (d) Prime Rate Advances. Each change in the interest rate of the Prime Rate
Advances based on changes in the Prime Rate shall be effective on the effective
date of such change and to the extent of such change. Bank shall use its best
efforts to give Borrower prompt notice of any such change in the Prime Rate;
provided, however, that any failure by Bank to provide Borrower with notice
hereunder shall not affect Bank's right to make changes in the interest rate of
the Prime Rate Advances based on changes in the Prime Rate.

     (e) LIBOR Advances. The interest rate applicable to each LIBOR Advance
shall be determined in accordance with Section 3.4(a) hereunder. Subject to
Sections 3.6 and 3.7, such rate shall apply during the entire Interest Period
applicable to such LIBOR Advance, and interest calculated thereon shall be
payable on the Interest Payment Date applicable to such LIBOR Advance.

          2.5 Section 2.6 (Fees). Subsection (c) entitled "Early Termination
Fees" of Section 2.6 is amended entirely and replaced with the following:

     (c) Early Termination Fees. A fully earned, non-refundable early
termination fee of three-fourths of one percent (0.75%) of the outstanding
principal balance of all Equipment Advances shall be due upon voluntary or
involuntary payment in full of Borrower's Obligations under the Committed
Equipment Line prior to the relevant Equipment Maturity Dates and termination of
Bank's obligation to lend the undisbursed portion of such Obligations under the
Committed Equipment Line if such payment and termination is made on or prior to
the first anniversary of the Fifth Effective Date, and a fee of one-half of one
percent (0.50%) of the outstanding principal balance of all Equipment Advances
if such payment and

                                                                               3

<PAGE>

termination is made on or prior to the second anniversary of the Fifth Effective
Date; provided that no such early termination fees shall be payable if Bank
agrees to refinance and/or redocument this Agreement in another lending division
of Bank (in Bank's sole discretion) prior to the relevant Maturity Dates or if
such payment and termination is made as a direct result of an initial public
offering of Borrower's equity securities.

And a new subsection (d) entitled "Unused Revolving Line Facility Fee" is added
to Section 2.6 as follows:

     (d) Unused Revolving Line Facility Fee. A fee (the "Unused Revolving Line
Facility Fee"), payable quarterly, in arrears, by the 15th day of the month
following each calendar quarter, in an amount equal to one-fourth of one percent
(0.25%) per annum of the average unused portion of the Revolving Line, as
determined by Bank. Borrower shall not be entitled to any credit, rebate or
repayment of any Unused Revolving Line Facility Fee previously earned by Bank
pursuant to this Section notwithstanding any termination of the Agreement or the
suspension or termination of Bank's obligation to make loans and advances
hereunder.

          2.6 Section 3.2 (Conditions Precedent to All Credit Extensions).
Section 3.2 is amended entirely and replaced with the following and the
following Sections 3.3, 3.4, 3.5, 3.6 and 3.7 are added to the Agreement:

     3.2 Conditions Precedent to all Credit Extensions. Bank's obligations to
make each Credit Extension, including the initial Credit Extension, is subject
to the following:

     (a) timely receipt of a Notice of Borrowing and/or Payment/Advance Form, as
applicable; and

     (b) the representations and warranties in Section 5 shall be true in all
material respects on the date of the Notice of Borrowing or Payment/Advance
Form, as applicable, and on the effective date of each Credit Extension;
provided, however, that such materiality qualifier shall not be applicable to
any representations and warranties that already are qualified or modified by
materiality in the text thereof; and provided, further that those
representations and warranties expressly referring to a specific date shall be
true, accurate and complete in all material respects as of such date, and no
Event of Default shall have occurred and be continuing or result from the Credit
Extension. Each Credit Extension is Borrower's representation and warranty on
that date that the representations and warranties in Section 5 remain true in
all material respects; provided, however, that such materiality qualifier shall
not be applicable to any representations and warranties that already are
qualified or modified by materiality in the text thereof; and provided, further
that those representations and warranties expressly referring to a specific date
shall be true, accurate and complete in all material respects as of such date.

     3.3 Covenant to Deliver. Borrower agrees to deliver to Bank each item
required to be delivered to Bank under this Agreement as a condition to any
Credit Extension. Borrower expressly agrees that the extension of a Credit
Extension prior to the receipt by Bank of any such item shall not constitute a
waiver by Bank of Borrower's obligation to deliver such item, and any such
extension in the absence of a required item shall be in Bank's sole discretion.

     3.4 Procedure for the Borrowing of Advances.

     (a) Subject to the prior satisfaction of all other applicable conditions to
the making of an Advance set forth in this Agreement, each Advance shall be made
upon Borrower's irrevocable written notice delivered to Bank in the form of a
Notice of Borrowing and, if applicable, a Payment/Advance Form, each executed
by a Responsible Officer of Borrower or his or her designee or without
instructions if the Advances are necessary to meet Obligations which have become
due. Bank may rely on any telephone notice given by a person whom Bank believes
is a Responsible Officer or designee. Borrower will indemnify Bank for any loss
Bank suffers due to such reliance. Such Notice of Borrowing must be received by
Bank prior to 11:00 a.m. Pacific time, (i) at least three (3) Business Days
prior to the requested

                                                                               4

<PAGE>

Funding Date, in the case of LIB0R Advances, and (ii) at least one (1) Business
Day prior to the requested Funding Date, in the case of Prime Rate Advances,
specifying:

          (1) the amount of the Advance, which, if a LIB0R Advance is requested,
shall be in an aggregate minimum principal amount of $1,000,000 or in any
integral multiple of $1,000,000 in excess thereof;

          (2) the requested Funding Date:

          (3) whether the Advance is to be comprised of LIBOR Advances or Prime
Rate Advances; and

          (4) the duration of the Interest Period applicable to any such LIBOR
Advances included in such notice; provided that if the Notice of Borrowing shall
fail to specify the duration of the Interest Period for any Advance comprised of
LIBOR Advances, such Interest Period shall be one (1) month.

     (b) The proceeds of all such Advances will then be made available to
Borrower on the Funding Date by Bank by transfer to the Designated Deposit
Account and, subsequently, by wire transfer to such other account as Borrower
may instruct in the Notice of Borrowing. No Advances shall be deemed made to
Borrower, and no interest shall accrue on any such Advance, until the related
funds have been deposited in the Designated Deposit Account.

     3.5 Conversion and Continuation Elections.

     (a) So long as (i) no Event of Default or Default exists; (ii) Borrower
shall not have sent any notice of termination of this Agreement; and (iii)
Borrower shall have complied with such customary procedures as Bank has
established from time to time for Borrower's requests for LIBOR Advances,
Borrower may, upon irrevocable written notice to Bank:

          (1) elect to convert on any Business Day, Prime Rate Advances in an
amount equal to $1,000,000 or any integral multiple of $1,000,000 in excess
thereof into LIBOR Advances;

          (2) elect to continue on any Interest Payment Date any LIBOR Advances
maturing on such Interest Payment Date (or any part thereof in an amount equal
to $1,000,000 or any integral multiple of $1,000,000 in excess thereof);
provided, that if the aggregate amount of LIBOR Advances shall have been
reduced, by payment, prepayment, or conversion of part thereof, to be less than
$1,000,000, such LIBOR Advances shall automatically convert into Prime Rate
Advances, and on and after such date the right of Borrower to continue such
Advances as, and convert such Advances into, LIBOR Advances shall terminate; or

          (3) elect to convert on any Interest Payment Date any LIBOR Advances
maturing on such Interest Payment Date (or any part thereof in an amount equal
to $1,000,000 or any integral multiple of $1,000,000 in excess thereof) into
Prime Rate Advances.

     (b) Borrower shall deliver a Notice of Conversion/Continuation in
accordance with Section 10, entitled Notices, to be received by Bank prior to
11:00 a.m. Pacific time at least (i) three (3) Business Days in advance of the
Conversion Date or Continuation Date, if any Advances are to be converted into
or continued as LIBOR Advances; and (ii) one (1) Business Day in advance of the
Conversion Date, if any Advances are to be converted into Prime Rate Advances,
in each case specifying the:

          (1) proposed Conversion Date or Continuation Date;

          (2) aggregate amount of the Advances to be converted or continued
which, if any Advances are to be converted into or continued as LIBOR Advances,
shall be in an aggregate minimum principal amount of $1,000,000 or in any
integral multiple of $1,000,000 in excess thereof;

          (3) nature of the proposed conversion or continuation; and

          (4) duration of the requested Interest Period.

     (c) If upon the expiration of any Interest Period applicable to any LIBOR
Advances, Borrower shall have timely failed to select a new Interest Period to
be applicable to such LIBOR Advances, Borrower shall be deemed to have elected
to convert such LIBOR Advances into Prime Rate Advances.

     (d) Any LIBOR Advances shall, at Bank's option, convert into Prime Rate
Advances in the event that (i) an Event of Default or Default shall exist, or
(ii) the aggregate principal amount of the Prime Rate Advances which have been
previously converted to LIBOR Advances, or the aggregate principal

                                                                               5

<PAGE>

amount of existing LIBOR Advances continued, as the case may be, at the
beginning of an Interest Period shall at any time during such Interest Period
exceed the Revolving Line. Borrower agrees to pay Bank, upon demand by Bank (or
Bank may, at its option, charge the Designated Deposit Account or any other
account Borrower maintains with Bank) any amounts required to compensate Bank
for any loss (including loss of anticipated profits), cost, or expense incurred
by Bank, as a result of the conversion of LIBOR Advances to Prime Rate Advances
pursuant to any of the foregoing.

     (e) Notwithstanding anything to the contrary contained herein, Bank shall
not be required to purchase United States Dollar deposits in the London
interbank market or other applicable LIBOR market to fund any LIBOR Advances,
but the provisions hereof shall be deemed to apply as if Bank had purchased such
deposits to fund the LIBOR Advances.

     3.6 Special Provisions Governing LIBOR Advances. Notwithstanding any other
provision of this Agreement to the contrary, the following provisions shall
govern with respect to LIBOR Advances as to the matters covered:

     (a) Determination of Applicable Interest Rate. As soon as practicable on
each Interest Rate Determination Date, Bank shall determine (which determination
shall, absent manifest error in calculation, be final, conclusive and binding
upon all parties) the interest rate that shall apply to the LIBOR Advances for
which an interest rate is then being determined for the applicable Interest
Period and shall promptly give notice thereof (in writing or by telephone
confirmed in writing) to Borrower.

     (b) Inability to Determine Applicable Interest Rate. In the event that Bank
shall have determined (which determination shall be final and conclusive and
binding upon all parties hereto), on any Interest Rate Determination Date with
respect to any LIBOR Advance, that by reason of circumstances affecting the
London interbank market adequate and fair means do not exist for ascertaining
the interest rate applicable to such Advance on the basis provided for in the
definition of LIBOR, Bank shall on such date give notice (by facsimile or by
telephone confirmed in writing) to Borrower of such determination, whereupon (i)
no Advances may be made as, or converted to, LIBOR Advances until such time as
Bank notifies Borrower that the circumstances giving rise to such notice no
longer exist, and (ii) any Notice of Borrowing or Notice of
Conversion/Continuation given by Borrower with respect to Advances in respect of
which such determination was made shall be deemed to be rescinded by Borrower.

     (c) Compensation for Breakage or Non-Commencement of Interest Periods.
Borrower shall compensate Bank, upon written request by Bank (which request
shall set forth the manner and method of computing such compensation), for all
reasonable losses, expenses and liabilities, if any (including any interest paid
by Bank to lenders of funds borrowed by it to make or carry its LIBOR Advances
and any loss, expense or liability incurred by Bank in connection with the
liquidation or re-employment of such funds) such that Bank may incur: (i) if for
any reason (other than a default by Bank or due to any failure of Bank to fund
LIBOR Advances due to impracticability or illegality under Sections 3.7(d) and
3.7(e)) a borrowing or a conversion to or continuation of any LIBOR Advance does
not occur on a date specified in a Notice of Borrowing or a Notice of
Conversion/Continuation, as the case may be, or (ii) if any principal payment
or any conversion of any of its LIBOR Advances occurs on a date prior to the
last day of an Interest Period applicable to that Advance.

     (d) Assumptions Concerning Funding of LIBOR Advances. Calculation of all
amounts payable to Bank under this Section 3.6 and under Section 3.4 shall be
made as though Bank had actually funded each of its relevant LIBOR Advances
through the purchase of a Eurodollar deposit bearing interest at the rate
obtained pursuant to the definition of LIBOR Rate in an amount equal to the
amount of such LIBOR Advance and having a maturity comparable to the relevant
Interest Period; provided, however, that Bank may fund each of its LIBOR
Advances in any manner it sees fit and the foregoing assumptions shall be
utilized only for the purposes of calculating amounts payable under this Section
3.6 and under Section 3.4.

     (e) LIBOR Advances After Default. After the occurrence and during the
continuance of an Event of Default, (i) Borrower may not elect to have an
Advance be made or continued as, or converted to,

                                                                               6

<PAGE>

a LIBOR Advance after the expiration of any Interest Period then in effect for
such Advance and (ii) subject to the provisions of Section 3.6(c), any Notice of
Conversion/Continuation given by Borrower with respect to a requested
conversion/continuation that has not yet occurred shall be deemed to be
rescinded by Borrower and be deemed a request to convert or continue Advances
referred to therein as Prime Rate Advances.

     3.7 Additional Requirements/Provisions Regarding LIBOR Advances.

     (a) If for any reason (including voluntary or mandatory prepayment or
acceleration), Bank receives all or part of the principal amount of a LIBOR
Advance prior to the last day of the Interest Period for such Advance, Borrower
shall immediately notify Borrower's account officer at Bank and, on demand by
Bank, pay Bank the amount (if any) by which (i) the additional interest which
would have been payable on the amount so received had it not been, received
until the last day of such Interest Period exceeds (ii) the interest which would
have been recoverable by Bank by placing the amount so received on deposit in
the certificate of deposit markets, the offshore currency markets, or United
States Treasury investment products, as the case may be, for a period starting
on the date on which it was so received and ending on the last day of such
Interest Period at the interest rate determined by Bank in its reasonable
discretion. Bank's determination as to such amount shall be conclusive absent
manifest error.

     (b) Borrower shall pay Bank, upon demand by Bank, from time to time such
amounts as Bank may determine to be necessary to compensate it for any costs
incurred by Bank that Bank determines are attributable to its making or
maintaining of any amount receivable by Bank hereunder in respect of any
Advances relating thereto (such increases in costs and reductions in amounts
receivable being herein called "Additional Costs"), in each case resulting from
any Regulatory Change which:

          (i) changes the basis of taxation of any amounts payable to Bank under
this Agreement in respect of any Advances (other than changes which affect taxes
measured by or imposed on the overall net income of Bank by the jurisdiction in
which Bank has its principal office);

          (ii) imposes or modifies any reserve, special deposit or similar
requirements relating to any extensions of credit or other assets of, or any
deposits with, or other liabilities of Bank (including any Advances or any
deposits referred to in the definition of LIBOR); or

          (iii) imposes any other condition affecting this Agreement (or any of
such extensions of credit or liabilities).

Bank will notify Borrower of any event occurring after the Closing Date which
will entitle Bank to compensation pursuant to this Section 3.7 as promptly as
practicable after it obtains knowledge thereof and determines to request such
compensation. Bank will furnish Borrower with a statement setting forth the
basis and amount of each request by Bank for compensation under this Section
3.7. Determinations and allocations by Bank for purposes of this Section 3.7 of
the effect of any Regulatory Change on its costs of maintaining its obligations
to make Advances, of making or maintaining Advances, or on amounts receivable by
it in respect of Advances, and of the additional amounts required to compensate
Bank in respect of any Additional Costs, shall be conclusive absent manifest
error.

     (c) If Bank shall determine that the adoption or implementation of any
applicable law, rule, regulation, or treaty regarding capital adequacy, or any
change therein, or any change in the interpretation or administration thereof by
any governmental authority, central bank, or comparable agency charged with the
interpretation or administration thereof, or compliance by Bank (or its
applicable lending office) with any respect or directive regarding capital
adequacy (whether or not having the force of law) of any such authority, central
bank, or comparable agency, has or would have the effect of reducing the rate of
return on capital of Bank or any person or entity controlling Bank (a "Parent")
as a consequence of its obligations hereunder to a level below that which Bank
(or its Parent) could have achieved but for such adoption, change, or compliance
(taking into consideration policies with respect to capital adequacy) by an
amount deemed by Bank to be material, then from time to time, within fifteen
(15) days after demand by Bank, Borrower shall pay to Bank such additional
amount or amounts as will compensate Bank for such reduction. A statement of
Bank claiming compensation under this Section 3.7(c) and setting forth the
additional amount or amounts to be paid to it hereunder shall be conclusive
absent manifest error.

                                                                               7

<PAGE>

     (d) If, at any time, Bank, in its sole and absolute discretion, determines
that (i) the amount of LIBOR Advances for periods equal to the corresponding
Interest Periods are not available to Bank in the offshore currency interbank
markets, or (ii) LIBOR does not accurately reflect the cost to Bank of lending
the LIBOR Advances, then Bank shall promptly give notice thereof to Borrower.
Upon the giving of such notice, Bank's obligation to make the LIBOR Advances
shall terminate; provided, however, Advances shall not terminate if Bank and
Borrower agree in writing to a different interest rate applicable to LIBOR
Advances.

     (e) If it shall become unlawful for Bank to continue to fund or maintain
any LIBOR Advances, or to perform its obligations hereunder, upon demand by
Bank, Borrower shall prepay the Advances in full with accrued interest thereon
and all other amounts payable by Borrower hereunder (including, without
limitation, any amount payable in connection with such prepayment pursuant to
Section 3.7(a)). Notwithstanding the foregoing, to the extent a determination by
Bank as described above relates to a LIBOR Advance then being requested by
Borrower pursuant to a Notice of Borrowing or a Notice of
Conversion/Continuation, Borrower shall have the option, subject to the
provisions of Section 3.6(c), to (i) rescind such Notice of Borrowing or Notice
of Conversion/Continuation by giving notice (by facsimile or by telephone
confirmed in writing) to Bank of such rescission on the date on which Bank gives
notice of its determination as described above, or (ii) modify such Notice of
Borrowing or Notice of Conversion/Continuation to obtain a Prime Rate Advance or
to have outstanding Advances converted into or continued as Prime Rate Advances
by giving notice (by facsimile or by telephone confirmed in writing) to Bank of
such modification on the date on which Bank gives notice of its determination as
described above.

          2.7 Section 6.2 (Financial Statements, Reports, Certificates),
Subsection (b) of Section 6.2 is amended entirely and replaced with the
following:

     (b) Within 20 days after the last day of each month, Borrower will deliver
to Bank aged listings of accounts receivable and accounts payable, and, after
outstanding Revolving Advances exceed $1,000,000, within 20 days after the last
day of each month and at the time of any request for a Revolving Advance,
Borrower will deliver to Bank a Borrowing Base Certificate signed by a
Responsible Officer in the form of Exhibit C.

          2.8 Section 6.7 (Financial Covenants). Section 6.7 is amended entirely
and replaced with the following:

     6.7 Financial Covenants. Commencing as of November 30, 2006, Borrower will
maintain as of the last day of each month:

          (i) Minimum Adjusted Quick Ratio. A ratio of Quick Assets to Current
Liabilities of at least 1.50 to 1.00.

          (ii) Minimum Fixed Charge Coverage Ratio. A ratio of Borrower's (a)
consolidated earnings before interest expense, income taxes, depreciation,
amortization of intangible assets and other non-cash charges made to Borrower's
income (all as determined by GAAP) minus unfunded capital expenditures and minus
cash taxes for the preceding nine-month period to (b) current maturities of long
term debt plus interest expense paid or payable during the preceding nine-month
period of at least 1.50 to 1.00, measured monthly on a rolling 9 month basis.

          (iii) Minimum Tangible Net Worth. A Tangible Net Worth of at least
$30,000,000, increasing by 50% of quarterly Net Income each fiscal quarter.

          2.9 Section 13 (Definitions). The following terms and their respective
definitions set forth in Section 13.1 are amended in their entirety and replaced
with the following:

                                                                               8

<PAGE>

          "Advance" is a Revolving Advance or an Equipment Advance, or both
     Revolving Advances and Equipment Advances, collectively, as the context
     requires.

          "Business Day" is any day other than a Saturday, Sunday or other day
     on which banking institutions in the State of California are authorized or
     required by law or other governmental action to close, except that if any
     determination of a "Business Day" shall relate to a LIBOR Advance, the term
     "Business Day" shall also mean a day on which dealings are carried on in
     the London interbank market.

          "Committed Equipment Line" is an Equipment Advance or Equipment
     Advances in an aggregate maximum amount of up to $25,000,000.

          "Committed Revolving Line" is a Revolving Advance or Revolving
     Advances in an aggregate maximum amount of up to $5,000,000.

          "Credit Extension" is each Revolving Advance, Equipment Advance,
     Letter of Credit, or any other extension of credit by Bank for Borrower's
     benefit.

          "Equipment Maturity Date" is the earliest of (a) the date sixty (60)
     months after the respective Equipment Advance or (b) the date of
     acceleration after the occurrence and continuance of an Event of Default.

          "Quick Assets" is, on any date, Borrower's consolidated, unrestricted
     cash and cash equivalents held at Bank, plus all Accounts.

          "Revolving Maturity Date" is the earliest of (a) October 31, 2009 [the
     third (3rd) anniversary of the Fifth Effective Date] or (b) the date of
     acceleration after the occurrence and continuance of an Event of Default.

          "Schedule" is any attached schedule of exceptions or Perfection
     Certificate delivered to Bank.

The definition of "Eligible Accounts" set forth in Section 13.1 is amended by
changing the dollar amount of "$125,000" set forth in subpart (e) of said
definition to the dollar amount of "$400,000"

The following terms and their respective definitions are deleted from Section
13.1 in their entirety:

Basic Rate, Committed Equipment 2 Line, Committed Equipment 3 Line, Equipment
Availability End Date, Equipment 2 Advance, Equipment 2 Availability End Date,
Equipment 2 Maturity Date, Equipment 3 Advance, Equipment 3 Availability End
Date, and Equipment 3 Maturity Date.

The following terms and their respective definitions set forth below are added
to Section 13.1 and inserted in their appropriate alphabetical order:

          "Continuation Date" means any date on which Borrower elects to
     continue a LIBOR Advance into another Interest Period.

          "Conversion Date" means any date on which Borrower elects to convert a
     Prime Rate Advance to a LIBOR Advance or a LIBOR Advance to a Prime Rate
     Advance.

          "Default Rate" is defined in Section 2.4(c).

          "Designated Deposit Account" is Borrower's deposit account, Account
     Number 3300467946, maintained with Bank.

                                                                               9

<PAGE>

          "EBITDA" is Borrower's consolidated earnings before interest expense,
     income taxes, depreciation, amortization of intangible assets and other
     non-cash charges made to Borrower's income (all a determined by GAAP).

          "Effective Amount" means with respect to any Advances on any date, the
     aggregate outstanding principal amount thereof after giving effect to any
     borrowing and prepayments or repayments thereof occurring on such date.

          "Eligible Equipment" is (a) new or used general purpose computer
     equipment, office equipment, test and laboratory equipment, and
     furnishings, subject to the limitations set forth herein, and (b) leasehold
     improvements, intangible property such as computer software and software
     licenses, equipment specifically designed or manufactured for Borrower,
     other intangible property, limited use property and other similar property
     and soft costs approved by Bank, including taxes, shipping, warranty
     charges, freight discounts and installation expenses, all of which complies
     with all of Borrower's representations and warranties to Bank and which is
     acceptable to Bank in all respects and in which Bank has a first priority
     Lien.

          "Fifth Effective Date" is defined in Section 2.1.2(a).

          "Funded Debt" is, on any date, Borrower's consolidated Indebtedness.

          "Funding Date" is any date on which a Credit Extension is made to or
     on account of Borrower which shall be a Business Day.

          "Interest Payment Date" means, with respect to any LIBOR Advance, the
     last day of each Interest Period applicable to such LIBOR Advance and, with
     respect to Prime Rate Advances, the last day of each month (or, if the last
     day of the month does not fall on a Business Day, then on the first
     Business Day following such date), and each date a Prime Rate Advance is
     converted into a LIBOR Advance to the extent of the amount converted to a
     LIBOR Advance.

          "Interest Period" means, as to any LIBOR Advance, the period
     commencing on the date of such LIBOR Advance, or on the
     conversion/continuation date on which the LIBOR Advance is converted into
     or continued as a LIBOR Advance, and ending on the date that is one (1),
     two (2) or three (3) months thereafter, in each case as Borrower may elect
     in the applicable Notice of Borrowing or Notice of Conversion/Continuation;
     provided, however, that (a) no Interest Period with respect to any LIBOR
     Advance shall end later than the Revolving Maturity Date or any applicable
     Equipment Maturity Date, (b) the last day of an Interest Period shall be
     determined in accordance with the practices of the LIBOR interbank market
     as from time to time in effect, (c) if any Interest Period would otherwise
     end on a day that is not a Business Day, that Interest Period shall be
     extended to the following Business Day unless, in the case of a LIBOR
     Advance, the result of such extension would be to carry such Interest
     Period into another calendar month, in which event such Interest Period
     shall end on the preceding Business Day, (d) any Interest Period pertaining
     to a LIBOR Advance that begins on the last Business Day of a calendar month
     (or on a day for which there is no numerically corresponding day in the
     calendar month at the end of such Interest Period) shall end on the last
     Business Day of the calendar month at the end of such Interest Period, and
     (e) interest shall accrue from and include the first Business Day of an
     Interest Period but exclude the last Business Day of such Interest Period.

          "Interest Rate Determination Date" means each date for calculating the
     LIBOR for purposes of determining the interest rate in respect of an
     Interest Period. The Interest Rate Determination Date shall be the second
     Business Day prior to the first day of the related Interest Period for a
     LIBOR Advance.

          "LIBOR Rate" means, for each Interest Period in respect of LIBOR
     Advances comprising part of the same Advance or Advances, an interest rate
     per annum (rounded upward to

                                                                              10
<PAGE>

     the nearest 1/16th of one percent (0.0625%)) equal to LIBOR for such
     Interest Period divided by one (1) minus the Reserve Requirement for such
     Interest Period.

          "LIBOR Rate Margin" is, at any date of determination, the applicable
     interest rate factor set forth in the column entitled "LIBOR Margin" in the
     applicable table below set opposite the corresponding ratio or range of
     ratios in the column entitled "Funded Debt to Trailing 12-Month EBITDA" in
     the tables identified below for Revolving Advances or Equipment Advances,
     as applicable, in which Borrower's then current ratio of Funded Debt to
     Trailing 12-Month EBITDA would fall:

     For Revolving Advances:

<TABLE>
<CAPTION>
Pricing        Funded Debt to         LIBOR    Prime
 Level    Trailing 12-Month EBITDA   Margin   Margin
-------   ------------------------   ------   ------
<S>       <C>                        <C>      <C>
I                  < 1.50x            2.00%    0.00%
II        > or = 1.50x and < 2.00x    2.25%    0.50%
III       > or = 2.00x and < 2.50x    2.50%    0.75%
IV        > or = 2.50x and < 3.00x    2.75%    1.00%
V               > or = 3.00x          3.00%    1.25%
</TABLE>

     For Equipment Advances:

<TABLE>
<CAPTION>
Pricing        Funded Debt to         LIBOR    Prime
 Level    Trailing 12-Month EBITDA   Margin   Margin
-------   ------------------------   ------   ------
<S>       <C>                        <C>      <C>
I                  < 1.50x            2 25%    0.25%
II        > or = 1.50x and < 2.00x    2.50%    0.75%
III       > or = 2.00x and < 2.50x    2.75%    1.00%
IV        > or = 2.50x and < 3.00x    3.00%    1.25%
V               > or = 3.00x          3.25%    1.50%
</TABLE>

          "LIBOR" means, for any Interest Rate Determination Date with respect
     to an Interest Period for any Advance to be made as, continued as or
     converted into a LIBOR Advance, the rate of interest per annum determined
     by Bank to be the per annum rate of interest at which deposits in United
     States Dollars are offered to Bank in the London interbank market (rounded
     upward, if necessary, to the nearest 1/100th of one percent (0.01%)) in
     which Bank customarily participates at 11:00 a.m. (local time in such
     interbank market) two (2) Business Days prior to the first day of such
     Interest Period for a period approximately equal to such Interest Period
     and in an amount approximately equal to the amount of such Advance.

          "LIBOR Advance" means an Advance that bears interest based on the
     LIBOR Rate.

          "Net Income" means, as calculated on a consolidated basis for Borrower
     and its Subsidiaries for any period as at any date of determination, the
     net profit (or loss), after provision for taxes, of Borrower and its
     Subsidiaries for such period taken as a single accounting period.

          "Notice of Borrowing" means a notice given by Borrower to Bank in
     accordance with Section 3.4(a), substantially in the form of Exhibit E
     attached, with appropriate insertions.

          "Notice of Conversion/Continuation" means a notice given by Borrower
     to Bank in accordance with Section 3.5, substantially in the form of
     Exhibit F. attached, with appropriate insertions.

          "Payment/Advance Form" is a Loan Payment/Advance Request Form in the
     form attached as Exhibit B.

          "Prime Rate Advance" means an Advance that bears interest based on the
     Prime Rate.

                                                                              11

<PAGE>

          "Prime Rate Margin" is, at any date of determination, the applicable
     interest rate factor set forth in the column entitled "Prime Margin" in the
     applicable table below set opposite the corresponding ratio or range of
     ratios in the column entitled "Funded Debt to Trailing 12-Month EBITDA" in
     the tables identified below for Revolving Advances or Equipment Advances,
     as applicable, in which Borrower's then current ratio of Funded Debt to
     Trailing 12-Month EBITDA would fail:

     For Revolving Advances:

<TABLE>
<CAPTION>
Pricing        Funded Debt to         LIBOR    Prime
 Level    trailing 12-Month EBITDA   Margin   Margin
-------   ------------------------   ------   ------
<S>       <C>                        <C>      <C>
   I               < 1.50x            2.00%    0.00%
  II      > or = 1.50x and < 2.00x    2.25%    0.50%
  III     > or = 2.00x and < 2.50x    2.50%    0.75%
   IV     > or = 2.50x and < 3.00x    2.75%    1.00%
   V            > or = 3.00x          3.00%    1.25%
</TABLE>

     For Equipment Advances:

<TABLE>
<CAPTION>
Pricing        Funded Debt to         LIBOR    Prime
 Level    trailing 12-Month EBITDA   Margin   Margin
-------   ------------------------   ------   ------
<S>       <C>                        <C>      <C>
   I               < 1.50x            2 25%    0.25%
  II      > or = 1.50x and < 2.00x    2.50%    0.75%
  III     > or = 2.00x and < 2.50x    2.75%    1.00%
   IV     > or = 2.50x and < 3.00x    3.00%    1.25%
   V            > or = 3.00x          3.25%    1.50%
</TABLE>

          "Regulatory Change" means, with respect to Bank, any change on or
     after the date of this Agreement in United States federal, state, or
     foreign laws or regulations, including Regulation D, or the adoption or
     making on or after such date of any interpretations, directives, or
     requests applying to a class of lenders including Bank, of or under any
     United States federal or state, or any foreign laws or regulations (whether
     or not having the force of law) by any court or governmental or monetary
     authority charged with the interpretation or administration thereof.

          "Reserve Requirement" means, for any Interest Period, the average
     maximum rate at which reserves (including any marginal, supplemental, or
     emergency reserves) are required to be maintained during such Interest
     Period under Regulation D against "Eurocurrency liabilities" (as such term
     is used in Regulation D) by member banks of the Federal Reserve System.
     Without limiting the effect of the foregoing, the Reserve Requirement shall
     reflect any other reserves required to be maintained by Bank by reason of
     any Regulatory Change against (a) any category of liabilities which
     includes deposits by reference to which the LIBOR Rate is to be determined
     as provided in the definition of LIBOR or (b) any category of extensions of
     credit or other assets which include Advances.

          "Trailing 12-Month EBITDA" is, at any date of determination,
     Borrower's EBITDA, as of the most recent month end, for the most recent
     twelve (12) consecutive months.

          2.9A Exhibits C and D attached to the Loan Agreement are amended
     entirely and replaced with Exhibits C and D attached hereto and Exhibits E
     and F attached hereto are added to the Loan Agreement.

                                                                              12

<PAGE>

     3. LIMITATION OF AMENDMENTS.

          3.1 The amendments set forth in SECTION 2, above, are effective for
the purposes set forth herein and shall be limited precisely as written and
shall not be deemed to (a) be a consent to any amendment, waiver or modification
of any other term or condition of any Loan Document, or (b) otherwise prejudice
any right or remedy which Bank may now have or may have in the future under or
in connection with any Loan Document.

          3.2 This Amendment shall be construed in connection with and as part
of the Loan Documents and all terms, conditions, representations, warranties,
covenants and agreements set forth in the Loan Documents, except as herein
amended, are hereby ratified and confirmed and shall remain in full force and
effect.

     4. REPRESENTATIONS AND WARRANTIES. To induce Bank to enter into this
Amendment, Borrower hereby represents and warrants to Bank as follows:

          4.1 Immediately after giving effect to this Amendment (a) the
representations and warranties contained in the Loan Documents are true,
accurate and complete in all material respects as of the date hereof (except to
the extent such representations and warranties relate to an earlier date, in
which case they are true and correct as of such date), and (b) to Borrower's
knowledge no Event of Default has occurred and is continuing;

          4.2 Borrower has the power and authority to execute and deliver this
Amendment and to perform its obligations under the Loan Agreement, as amended by
this Amendment;

          4.3 The organizational documents of Borrower delivered to Bank on the
Effective Date remain true, accurate and complete and have not been amended,
supplemented or restated and are and continue to be in full force and effect;

          4.4 The execution and delivery by Borrower of this Amendment and the
performance by Borrower of its obligations under the Loan Agreement, as amended
by this Amendment, have been duly authorized;

          4.5 The execution and delivery by Borrower of this Amendment and the
performance by Borrower of its obligations under the Loan Agreement, as amended
by this Amendment, do not and will not contravene (a) any law or regulation
binding on or affecting Borrower, (b) any contractual restriction with a Person
binding on Borrower, (c) any order, judgment or decree of any court or other
governmental or public body or authority, or subdivision thereof, binding on
Borrower, or (d) the organizational documents of Borrower;

          4.6 The execution and delivery by Borrower of this Amendment and the
performance by Borrower of its obligations under the Loan Agreement, as amended
by this Amendment, do not require any order, consent, approval, license,
authorization or validation of, or filing, recording or registration with, or
exemption by any governmental or public body or authority, or subdivision
thereof, binding on either Borrower, except as already has been obtained or
made; and

          4.7 This Amendment has been duly executed and delivered by Borrower
and is the binding obligation of Borrower, enforceable against Borrower in
accordance with its terms, except as such enforceability may be limited by
bankruptcy, insolvency, reorganization, liquidation, moratorium or other similar
laws of general application and equitable principles relating to or affecting
creditors' rights.

     5. COUNTERPARTS. This Amendment may be executed in any number of
counterparts and all of such counterparts taken together shall be deemed to
constitute one and the same instrument.

                                                                              13

<PAGE>

     6. EFFECTIVENESS. This Amendment shall be deemed effective upon (a) the due
execution and delivery to Bank of this Amendment by each party hereto, (b)
Borrower's payment to Bank of a fee in an amount equal to $112,500.00, and (c)
Bank's receipt of (i) an Acknowledgment of Amendment and Reaffirmation of
Guaranty substantially in the form attached hereto as Schedule 1, duly executed
and delivered by each Guarantor, (ii) a Perfection Certificate on Bank's form
therefore, (iii) an Addendum to Intellectual Property Security Agreement, and
(iv) the proceeds of the Repayment Advance being made under Section 2.1.2(a) as
amended by this Amendment.

     7. GOVERNING LAW. This Amendment and the rights and obligations of the
parties hereto shall be governed by and construed in accordance with the laws of
the State of Arizona.

     8. MISCELLANEOUS. All of the provisions in Sections 10, 11 and 12 of the
Loan Agreement which are not already included in this Amendment are incorporated
in this Amendment by this reference as if fully set forth herein, except that
the references in the Loan Agreement to the term "this Agreement" and words of
similar import shall mean this Amendment.

     IN WITNESS WHEREOF, the parties hereto have caused this Amendment to be
duly executed and delivered as of the date first written above.

BANK:                                   BORROWER:

SILICON VALLEY BANK                     LIMELIGHT NETWORKS, INC.

By: /s/ Travis D. Wood                  By: /s/ William H. Rinehart
    ---------------------------------       ------------------------------------
Name: TRAVIS D. WOOD                    Name: William H. Rinehart
Title: VICE PRESIDENT                   Title: President & CEO

                                                                              14
<PAGE>

                                    EXHIBIT C
                           BORROWING BASE CERTIFICATE

Borrower LIMELIGHT NETWORKS, INC.                    Bank: Silicon Valley Bank
                                                           14300 Northsight
                                                           Boulevard, Suite 203,
                                                           Scottsdale, Arizona
                                                           85260

Commitment Revolving Line: $5,000,000

<TABLE>
<S>   <C>                                                        <C>            <C>
ACCOUNTS RECEIVABLE
1.    Accounts Receivable Book Value as of __________                           $___________
2.    Additions (please explain on reverse)                                     $___________
3.    TOTAL ACCOUNTS RECEIVABLE                                                 $___________

ACCOUNTS RECEIVABLE DEDUCTIONS (without duplication)
4.    Amounts over 90 days due                                   $___________
5.    Balance of 50% over 90 day accounts                        $___________
6.    Credit balances over 90 days                               $___________
7.    Concentration Limits                                       $___________
8.    Foreign Accounts**                                         $___________
9.    Federal Governmental Accounts                              $___________
10.   Contra Accounts                                            $___________
11.   Promotion or Demo Accounts                                 $___________
12.   Intercompany/Employee Accounts                             $___________
13.   Other (please explain on reverse)                          $___________
14.   TOTAL ACCOUNTS RECEIVABLE DEDUCTIONS                                      $___________
15.   Eligible Accounts (#3 minus #14)                                          $___________
16.   LOAN VALUE OF ACCOUNTS (80% of #15)                                       $___________
**    except for up to $400,000 from UK eligibles

BALANCES
17.   Maximum Loan Amount                                        $  4,000,000
18.   Total Funds Available [Lesser of #17 or #16]                              $___________
19.   Present balance owing on Line of Credit minus $1,000,000   $___________
20.   Outstanding under Sublimits (LC or CM)                     $___________
21.   RESERVE POSITION (#18 minus #19 and #20)                                  $___________
</TABLE>

The undersigned represents and warrants that this is true, complete and correct,
and that the information in this Borrowing Base Certificate complies with the
representations and warranties in the Loan and Security Agreement between the
undersigned and Silicon Valley Bank.

COMMENTS:                               BANK USE ONLY

LIMELIGHT NETWORKS, INC.                Rec'd by:
                                                  ------------------------------
                                                  Auth. Signer
By:                                     Date:
    ---------------------------------         ----------------------------------
    Authorized Signer

                                        Verified:
                                                  ------------------------------
                                                  Auth. Signer
                                        Date:
                                              ----------------------------------
<PAGE>

                                    EXHIBIT D
                             COMPLIANCE CERTIFICATE

TO:   SILICON VALLEY BANK
      14300 Northsight Boulevard, Suite 203
      Scottsdale, Arizona 85260

FROM: LIMELIGHT NETWORKS, INC.

     The undersigned Responsible Officer of LIMELIGHT NETWORKS, INC.
("Borrower") certifies that under the terms and conditions of the Loan and
Security Agreement between Borrower and Bank (the "Agreement"), (i) Borrower is
in complete compliance for the period ending _______ with all required covenants
except as noted below and (ii) all representations and warranties in the
Agreement are true and correct in all material respects on this date. In
addition, the undersigned certifies that Borrower, and each Subsidiary, has
timely filed all required tax returns and paid, or made adequate provision to
pay, all material taxes, except those being contested in good faith with
adequate reserves under GAAP. Attached are the required documents supporting the
certification. The Officer certifies that these are prepared in accordance with
Generally Accepted Accounting Principles (GAAP) consistently applied from one
period to the next except as explained in an accompanying letter or footnotes.
The Responsible Officer acknowledges that no borrowings may be requested at any
time or date of determination that Borrower is not in compliance with any of the
terms of the Agreement, and that compliance is determined not just at the date
this certificate is delivered.

Please Indicate compliance status by circling Yes/No under "Complies" column.

<TABLE>
<CAPTION>
Reporting Covenant                       Required                  Complies
------------------                       --------                  --------
<S>                                      <C>                       <C>
Monthly financial statements + CC        Monthly within 20 days    Yes   No
Annual (Audited)                         FYE within 120 days       Yes   No
A/R & A/P Agings                         Monthly within 20 days    Yes   No
A/R Audit                                Initial and Annual        Yes   No
Borrowing Base Certificate               Monthly within 20 days*   Yes   No
Annual financial projections             30 days prior to FYE      Yes   No
</TABLE>

*    after Revolving Advances exceed $1,000,000

<TABLE>
<CAPTION>
Financial Covenant                       Required            Actual       Complies
------------------                       --------            ------       --------
<S>                                      <C>                 <C>          <C>
Maintain on a Monthly Basis:
   Minimum (Adjusted Quick Ratio)        1.50:1.00           ____:1.00    Yes   No
   Minimum Fixed Charge Coverage Ratio   1.50:1.00           ____:1.00    Yes   No
   Minimum Tangible Net Worth            $30,000,000         $_________   Yes   No
                                         + 50% of
                                         Qtrly NI ea
                                         FQ
</TABLE>

For interest rate margin purposes:

Ratio of Funded Debt to Training 12-Month EBITDA, as of end of month is:
_______:1.00

Have there been updates to Borrower's intellectual property? Yes/No

Borrower only has deposit accounts located at the following institutions:
______________________________.

<PAGE>

Comments Regarding Exceptions: See Attached.

Sincerely,                              BANK USE ONLY

LIMELIGHT NETWORKS, INC.
                                        Received by:
                                                     ---------------------------
----------------------------------                   AUTHORIZED SIGNER
SIGNATURE                               Date:
                                              ----------------------------------
----------------------------------
TITLE
                                        Verified:
----------------------------------                ------------------------------
DATE                                              AUTHORIZED SIGNER
                                        Date:
                                              ----------------------------------

                                        Compliance Status:                   Yes

                                                                               3
<PAGE>

                                   EXHIBIT E
                           FORM OF NOTICE OF BORROWING
                            LIMELIGHT NETWORKS, INC.

                                                   Date: _______________________

TO: SILICON VALLEY BANK
    3003 Tasman Drive
    Santa Clara, CA 95054
    Attention: Corporate Services Department

RE: Loan and Security Agreement dated as of April 15, 2005 (as amended,
modified, supplemented or restated from time to time, the "Loan Agreement"), by
and between Limelight Networks, Inc. ("Borrower") and Silicon Valley Bank (the
"Bank")

Ladies and Gentlemen:

     The undersigned refers to the Loan Agreement, the terms defined therein and
used herein as so defined, and hereby gives you notice irrevocably, pursuant to
Section 3.4(a) of the Loan Agreement, of the borrowing of an Advance.

1. The Funding Date, which shall be a Business Day, of the requested borrowing
is __________________.

2. The aggregate amount of the requested borrowing is $_________________.

3. The requested Advance shall consist of $_______________ of Prime Rate
Advances and $_______________________ of LIBOR Advances.

4. The duration of the interest Period for the LIBOR Advances included in the
requested Advance shall be ________ months.

The undersigned hereby certifies that the following statements are true on the
date hereof, and will be true on the date of the proposed Advance before and
after giving effect thereto, and to the application of the proceeds therefrom,
as applicable:

     (a) all representations and warranties of Borrower contained in the Loan
Agreement are true, accurate and complete in all material respects as of the
date hereof; provided, however, that such materiality qualifier shall not be
applicable to any representations and warranties that already are qualified or
modified by materiality in the text thereof; and provided, further that those
representations and warranties expressly referring to a specific date shall be
true, accurate and complete in all material respects as of such date;

     (b) no Default or Event of Default has occurred and is continuing, or would
result from such proposed Advance; and

     (c) if the requested Advance is to be a Revolving Advance, such Revolving
Advance will not cause the aggregate principal amount of the outstanding
Revolving Advances exceeding $1,000,000 to exceed, as of the designated Funding
Date, (i) the lesser of (A) $4,000,000 or (B) the Borrowing Base minus (ii) the
amount of all outstanding Letters of Credit (including drawn but unreimbursed
Letters of Credit), and minus (iii) the aggregate outstanding Revolving Advances
(including any amounts used for Cash Management Services) exceeding $1,000,000.

BORROWER                                LIMELIGHT NETWORKS, INC.

                                        By:
                                            ------------------------------------
                                        Name:
                                              ----------------------------------
                                        Title:
                                               ---------------------------------

For internal Bank use only

<TABLE>
<CAPTION>
LIBOR Pricing Date   LIBOR   LIBOR Variance   Maturity Date
------------------   -----   --------------   -------------
<S>                  <C>     <C>              <C>
                                  ___%
</TABLE>

<PAGE>

                                   EXHIBIT F
                   FORM OF NOTICE OF CONVERSION/CONTINUATION
                            LIMELIGHT NETWORKS, INC.

                                                         Date __________________
TO: SILICON VALLEY BANK
    3003 Tasman Drive
    Santa Clara, CA 95054
    Attention: Corporate Services Department

RE: Loan and Security Agreement dated as of April 15, 2005 (as amended,
modified, supplemented or restated from time to time, the "Loan Agreement"), by
and between Limelight Networks, Inc. ("Borrower") and Silicon Valley Bank (the
"Bank")

Ladies and Gentlemen:

     The undersigned refers to the Loan Agreement, the terms defined therein
being used herein as therein defined, and hereby gives you notice irrevocably,
pursuant to Section 3.5 of the Loan Agreement, of the [conversion]
[continuation] of the Advances specified herein, that:

1. The date of the [conversion] [continuation] is _______________, 20___.

2. The aggregate amount of the proposed Advances to be [converted] is $_______
_______________or [continued] is $______________________.

3. The Advances are to be [converted into] [continued as] [LIBOR] [Prime Rate]
Advances.

4. The duration of the Interest Period for the LIBOR Advances included in the
[conversion] [continuation] shall be_____months.

     The undersigned, on behalf of Borrower, hereby certifies that the following
statements are true on the date hereof, and will be true on the date of the
proposed [conversion] [continuation], before and after giving effect thereto and
to the application of the proceeds therefrom:

     (a) all representations and warranties of Borrower stated in the Loan
Agreement are true, accurate and complete in all material respects as of the
date hereof; provided, however, that such materiality qualifier shall not be
applicable to any representations and warranties that already are qualified or
modified by materiality in the text thereof; and provided, further that those
representations and warranties expressly referring to a specific date shall be
true, accurate and complete in all material respects as of such date; and

     (b) no Default or Event of Default has occurred and is continuing, or would
result from such proposed [conversion] [continuation].

BORROWER                                LIMELIGHT NETWORKS, INC.

                                        By:
                                            ------------------------------------
                                        Name:
                                              ----------------------------------
                                        Title:
                                               ---------------------------------

For internal Bank use only

<TABLE>
<CAPTION>
LIBOR Pricing Date   LIBOR   LIBOR Variance   Maturity Date
------------------   -----   --------------   -------------
<S>                  <C>     <C>              <C>
                                  ___%
</TABLE>

<PAGE>

                                     SCHEDULE 1

                          ACKNOWLEDGMENT OF AMENDMENT
                                      AND
                           REAFFIRMATION OF GUARANTY

     Section 1. Guarantor hereby acknowledges and confirms that it has reviewed
and approved the terms and conditions of the Fifth Amendment to Loan and
Security Agreement dated as of even date herewith (the "Amendment").

     Section 2. Guarantor hereby consents to the Amendment and agrees that the
Unconditional Guaranty of Guarantor dated April 15, 2005 relating to the
Obligations of Borrower under the Loan Agreement shall continue in full force
and effect, shall be valid and enforceable and shall not be impaired or
otherwise affected by the execution of the Amendment or any other document or
instrument delivered in connection herewith.

     Section 3. Guarantor represents and warrants that, after giving effect to
the Amendment, all representations and warranties contained in the Guaranty are
true, accurate and complete as if made the date hereof.

Dated as of___________, 2006

GUARANTOR                               [INSERT NAME]

                                        By:
                                            ------------------------------------
                                        Name:
                                              ----------------------------------
                                        Title:
                                               ---------------------------------

                                                                               6

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