Document:

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                                                                   Exhibit 10.18

                  EMPLOYMENT TERMINATION AND RELEASE AGREEMENT

       This Agreement is entered into between Mark Housley (the "Employee") and
Digital Origin, Inc. (the "Company"), a wholly owned subsidiary of Media 100,
Inc. ("M100"), and M100 as of the "Effective Date" identified in the signature
block below. Employee is an employee of the Company and an officer and director
of M100. The parties desire to memorialize the circumstances under which the
Employee's employment relationship with the Company will terminate. The
Employee, the Company and M100 therefore agree as follows:

       1. The Employee will resign as an officer of Media 100 and will terminate
his employment relationship with the Company as of November 3, 2000 (the
"Resignation Date"), and in consideration of the benefits set forth below the
Company will pay Employee the "Final Payment" (defined below) on January 1, 2001
(the "Termination Date") and make a "Supplemental Stock Option Grant" attached
to this agreement. The Final Payment is $190,093.85 (one hundred ninety thousand
ninety-three dollars and eighty-five cents). The Supplemental Stock Option Grant
will be fully vested as of the Resignation Date and will expire on March 8,
2002. This Grant is for 56,250 shares with a strike price of $20.44. Through the
Resignation Date, the Employee will continue to receive his current salary under
normal payroll procedures along with all existing employee benefits that
continue to be made available to senior executives of the Company (or any
replacement benefits), including the vesting of any stock options granted by the
Company or M100. In any event, the Company agrees that Employee is entitled to
exercise all existing stock options that vest by the Resignation Date and has
ninety days after Resignation Date to do so (to be extended day for day for any
blackouts or other restrictions on disposition).

       2. Employee agrees to remain on M100's board of directors and to stand
for re election at the next annual meeting of shareholders. Employee may resign
his board seat on notice to M100, however. Despite the provisions of Section 3
below, the Company and M100 agree to defend, indemnify and hold Employee
harmless from all loss, liability, claims and expense, including reasonable
attorneys' and experts' charges, occasioned by Employee's employment and
executive officer and director capacities to the extent required by California
law or existing agreement.

       3. As of the Effective Date, Employee agrees that the foregoing terms are
in full satisfaction of all obligations of the Company and M100 to the Employee
arising out of or in connection with his employment including without
limitation, all salary, bonuses, accrued vacation, sick pay, reimbursement of
expenses, statutory and contractual notice requirements, and that the Final
Payment and Supplemental Stock Option Grants constitute consideration for the
covenants and releases of the Employee described below.

The Employee acknowledges his understanding that he may take twenty-one days to
consider this Agreement and that he has been advised to consult with an attorney
prior to executing this Agreement. The Employee further acknowledges that he
understands that he may revoke this Agreement within seven days of his execution
of this agreement.

As of the Termination Date, the Employee acknowledges that he has no claims
against the Company based on his employment by the Company or his separation
therefrom and irrevocably, fully and finally releases the Company, its parent,
subsidiaries, affiliates, successors, officers, agents and employees from all
causes of action, claims, suits, demands or other obligations or liabilities,
whether known or unknown, that Employee ever had, now has, or may in the future
have, that may be alleged to arise out of or in connection with his previous,
current or future employment with the Company, or separation therefrom,
including, not by way of limitation, any claims for options, stock, wages,
bonuses, or expense reimbursement, and any claims that any terms of his
employment with the Company or any circumstances of his separation were

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wrongful, in breach of any obligation of the Company or in violation of any
rights, contractual, statutory or otherwise, of the Employee, including but not
limited to rights arising under federal or state age discrimination and older
workers protection statutes. In this regard, the Employee waives any rights
conferred by California Civil Code Section 1542 which provides as follows:

"A GENERAL RELEASE DOES NOT EXTEND TO CLAIMS WHICH THE CREDITOR DOES NOT KNOW OR
SUSPECT TO EXIST IN HIS FAVOR WHICH IF KNOWN BY HIM MUST HAVE MATERIALLY
AFFECTED HIS SETTLEMENT WITH THE DEBTOR."

Despite the foregoing, Employee has the right to enforce the provisions of this
Agreement (including the Supplemental Stock Option Grants) or to pursue claims
that accrue after the Effective Date. Moreover, Employee reserves the right to
rescind this Agreement in the event that the Company or M100 makes any claim
against Employee with respect to matters accruing prior to the Effective Date.
Late payments bear interest at the rate of one percent per month. The prevailing
party in any dispute is entitled to recover its attorneys' and experts' charges.

       4. The Employee and the Company agree to keep the terms of this Agreement
confidential, except to the extent required by law or as mutually agreed or as
necessary in seeking professional legal or accounting advice.

       5. The Employee acknowledges that during his employment she has had
access to confidential proprietary information of the Company and of third
parties and acknowledges his obligation by prior agreement and at common law to
continue to hold such information in confidence and neither disclose and/or use
such information, despite the termination of his employment. The Employee
confirms that he has returned all copies and records in any form of such
information and other Company property to the Company.

       6. The Employee agrees that he shall not knowingly make any statement,
written or oral which disparages the Company or its representatives,
employees, products, accounting or business practices, and the Company agrees
that it shall not knowingly make any form of statement disparaging the
Employee. After the Resignation Date, Employee shall not knowingly seek
reemployment with the Company or M100, unless requested to do so by the
Company or M100.

       7. This Agreement is intended by the parties to be a complete and final
expression of their rights and duties respecting the employment of the Employee
by the Company and the separation of the Employee from the Company and M100.
This Agreement may not be modified unless such modification is embodied in
writing, signed by the party against whom the modification is sought to be
enforced.

The Effective Date is:  10/20/2000

Employee--Mark Housley

                                            Date:
------------------------------------             --------------------

By:                                         Date:
------------------------------------             --------------------

Steven Shea
Chief Financial Officer
Media 100 Inc.<PAGE>
                                                                     Exhibit 4.1

                                    FORM OF
                 FLOATING RATE SENIOR NOTE DUE FEBRUARY 28, 2003

UNLESS THIS CERTIFICATE IS PRESENTED BY AN AUTHORIZED REPRESEN TATIVE OF THE
DEPOSITORY TRUST COMPANY, A NEW YORK CORPORA TION ("DTC"), TO ISSUER OR ITS
AGENT FOR REGISTRATION OF TRANS FER, EXCHANGE, OR PAYMENT, AND ANY CERTIFICATE
ISSUED IS REGISTERED IN THE NAME OF CEDE & CO. OR IN SUCH OTHER NAME AS IS
REQUESTED BY AN AUTHORIZED REPRESENTATIVE OF DTC (AND ANY PAYMENT IS MADE TO
CEDE & CO. OR TO SUCH OTHER ENTITY AS IS REQUESTED BY AN AUTHORIZED
REPRESENTATIVE OF DTC), ANY TRANSFER, PLEDGE, OR OTHER USE HEREOF FOR VALUE OR
OTHERWISE BY OR TO ANY PERSON IS WRONGFUL INASMUCH AS THE REGISTERED OWNER
HEREOF, CEDE & CO., HAS AN INTEREST HEREIN.

THIS SENIOR NOTE IS IN GLOBAL FORM WITHIN THE MEANING OF THE INDENTURE
HEREINAFTER REFERRED TO AND IS REGISTERED IN THE NAME OF DTC OR A NOMINEE OF
DTC. UNLESS AND UNTIL IT IS EX CHANGED IN WHOLE OR IN PART FOR SENIOR NOTES IN
CERTIFICATED FORM IN THE LIMITED CIRCUMSTANCES DESCRIBED IN THE INDENTURE, THIS
NOTE MAY NOT BE TRANSFERRED EXCEPT AS A WHOLE BY DTC TO A NOMINEE OF DTC, OR BY
A NOMINEE OF DTC TO ANOTHER NOMINEE OF DTC, OR BY DTC OR ANY SUCH NOMINEE TO A
SUCCESSOR DEPOSITORY OR A NOMINEE OF SUCH SUCCESSOR DEPOSITORY.

                           PROTECTIVE LIFE CORPORATION
                 Floating Rate Senior Note Due February 28, 2003

No. 1                                                               $100,000,000
                                                              CUSIP: 743674 AN 3

Protective Life Corporation, a corporation duly organized and existing under the
laws of the State of Delaware (herein called the "Company", which term includes
any successor corporation under the Indenture (as defined on the reverse
hereof)), for value received, hereby promises to pay to Cede & Co., or
registered assigns, the principal sum of $100,000,000 (One Hundred Million
Dollars) on February 28, 2003, and to pay interest thereon from February 28,
2001, or from the most recent Interest Payment Date to which interest has been
paid or duly provided for. Interest shall be payable on the Company's Floating
Rate Senior Note due February 28, 2003 ("Series 2001 Note")

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quarterly on February 28, May 28, August 28 and November 28 of each year (each
an "Interest Payment Date"), commencing on May 28, 2001 at the rate of The
London Interbank Borrowing Rate ("LIBOR") plus 0.375% per annum, until the
principal hereof is paid or made available for payment; PROVIDED that any such
installment of interest which is overdue shall bear interest at the rate of
LIBOR plus 0.375% per annum (to the extent that the payment of such interest
shall be legally enforceable) from the dates such amounts are due until they are
paid or made available for payment, and such interest shall be payable on
demand. The amount of interest payable on any Interest Payment Date shall be
computed on the basis of a 360-day year for the actual number of days elapsed.
In the event that any date on which interest is payable on this Series 2001 Note
is not a Business Day, then payment of the interest payable on such date will be
made on the next succeeding day which is a Business Day (and without any
interest or other payment in respect to any such delay), except that, if such
Business Day is in the next succeeding calendar year, such payment shall be made
on the immediately preceding Business Day, in each case with the same force and
effect as if made on such date. The interest so payable on any Interest Payment
Date which is punctually paid or duly provided for on any Interest Payment Date
will, as provided in the Indenture referred to on the reverse hereof, be paid to
the Person in whose name this Series 2001 Note is registered at the close of
business on the Regular Record Date for such Interest Payment Date, which shall
the 15th calendar day preceding February 28, May 28, August 28 or November 28
(each a "Regular Record Date"). Any such interest not so punctually paid or duly
provided for will forthwith cease to be payable to the Person in whose name this
Series 2001 Note is registered on the relevant Regular Record Date, and such
defaulted interest shall instead be payable to the Person in whose name this
Series 2001 Note is registered on the Special Record Date or other specified
date determined in accordance with the Indenture and Supplemental Indenture No.
8, referred to on the reverse hereof.

      The interest rate on the floating rate notes will be a per annum rate
equal to (i) LIBOR (determined for the initial interest period and, quarterly,
for each subsequent interest period in the manner described below) plus (ii)
0.375%. The interest rate will be set for the initial interest period
(commencing February 28, 2001) and reset for each subsequent quarterly interest
period, effective the first day in such interest period. For each interest
period, the interest rate in effect will be based on LIBOR as determined on the
second London business day preceding the first day of such interest period (each
such date is referred to as an interest determination date). LIBOR will be
determined for each interest period in accordance with the following provisions:

      (a) On the initial interest determination date, February 26, 2001, the
Company will ascertain the offered rate based on a weighted average (based on
the actual number of days in the initial interest period) of the respective
offered rates for

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three-month and four-month deposits in U.S. dollars in the London interbank
market, which appear on the Telerate Page 3750 as of 11:00 a.m. (London time) on
such interest determination date.

      (b) On each interest determination date subsequent to the initial
determina tion date, the Company will ascertain the offered rate for three-month
deposits in U.S. dollars in the London interbank market, which appears on the
Telerate Page 3750 as of 11:00 a.m. (London time) on such interest determination
date.

      (c) If such rate does not appear on the Telerate Page 3750, or the
Telerate Page 3750 is unavailable, the Company will request four major banks in
the London interbank market (referred to as the reference banks) to provide the
Company with their offered quotation (expressed as a rate per annum) for
three-month deposits in U.S. dollars to leading banks in the London interbank
market, in a principal amount equal to an amount of not less than $1 million
that is representative for a single transaction in such market at such time, at
approximately 11:00 a.m. (London time) on the interest determination date. If at
least two such quotations are provided, LIBOR in respect of that interest
determination date will be the arithmetic mean of such quotations.

      (d) If less than two reference banks provide the Company with such offered
quotations, LIBOR in respect of that interest determination date will be the
arithmetic mean of the rates quoted by three major banks in The City of New York
selected by the Company at approximately 11:00 a.m., New York City time, on that
interest determina tion date for three-month loans in U.S. dollars to leading
European banks, in a principal amount equal to an amount of not less than $1
million that is representative for a single transaction in such market at such
time; provided, however, that if the selected banks are not quoting as mentioned
in this sentence, LIBOR will remain LIBOR in effect on such interest
determination date.

      As used in this Supplemental Indenture No. 8, "business day" means any
day, other than a Saturday or Sunday, that is neither a legal holiday nor a day
on which commercial banks are authorized or required by law, regulation or
executive order to close in The City of New York and "London business day" means
any day on which dealings in deposits in U.S. dollars are transacted in the
London interbank market.

      Telerate Page 3750 means the display designated as page "3750" on Bridge
Telerate, Inc. (or such other page as may replace the 3750 page on that service
or such other service or services as may be nominated by the British Bankers'
Association for the purpose of displaying London interbank offered rates for
U.S. dollar deposits).

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      Payment of the principal of and interest on this Series 2001 Note will be
made at the office or agency of the Company maintained for that purpose in the
Borough of Manhattan, The City of New York (which shall initially be the
Corporate Trust Office of the Trustee), in same day funds by wire transfer to an
account maintained by the Person entitled thereto as specified in the Register
of Holders of the Series 2001 Notes, in such coin or currency of the United
States of America as at the time of payment is legal tender for payment of
public and private debts.

      Reference is hereby made to the further provisions of this Series 2001
Note set forth on the reverse hereof, which further provisions shall for all
purposes have the same effect as if set forth at this place.

      Unless the certificate of authentication hereon has been executed by the
Trustee referred to on the reverse hereof by manual signature, this Series 2001
Note shall not be entitled to any benefit under the Indenture and Supplemental
Indenture No. 8 referred to on the reverse hereof or be valid or obligatory for
any purpose.

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      IN WITNESS WHEREOF, Protective Life Corporation has caused this instrument
to be executed under its corporate seal.

Dated: February 28, 2001
(Corporate Seal)              PROTECTIVE LIFE CORPORATION

                              By:
                                  ----------------------------------------------
                              Richard J. Bielen
                              Senior Vice President, Investments

                              By:
                                  ----------------------------------------------
                              Jerry W. DeFoor
                              Vice President, Controller
                              and Chief Accounting Officer

This is one of the Securities of the series described in the within-mentioned
Indenture.

Dated: February 28, 2001

                              THE BANK OF NEW YORK,
                              as Trustee

                              By: THE BANK OF NEW YORK TRUST
                                  COMPANY OF FLORIDA, N.A.,
                                  as Agent

                              By:
                                  ----------------------------------------------
                              Authorized Signatory

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                          (REVERSE OF SERIES 2001 NOTE)

This Series 2001 Note is one of a duly authorized issue of securities of the
Company (herein called the "Securities"), issued and to be issued in one or more
series under a Senior Indenture, dated as of June 1, 1994 (herein, together with
all indentures supplemental thereto, including Supplemental Indenture No. 8,
dated as of February 28, 2001, called the "Indenture"), from the Company to The
Bank of New York (herein called the "Trustee," which term includes any successor
trustee under the Indenture), to which Indenture reference is hereby made for a
statement of the respective rights, limitations of rights, duties and immunities
thereunder of the Company, the Trustee and the Holders of the Securities and of
the terms upon which the Securities are, and are to be, authenticated and
delivered. This Security is one of the series designated on the face hereof,
limited in aggregate principal amount to $100,000,000, and is issued pursuant to
Supplemental Indenture No. 8, dated as of February 28, 2001, from the Company to
the Trustee, relating to the securities of this series (herein called
"Supplemental Indenture No. 8").

The Securities of this series shall not be subject to redemption at the option
of the Company at any time and the Company shall have no obligation to redeem or
purchase the Securities pursuant to any sinking fund.

For purposes of this section, a "Beneficial Owner" means the Person who has the
right to sell, transfer or otherwise dispose of an interest in a Series 2001
Note and the right to receive the proceeds therefrom, as well as the interest
and principal payable to the holder thereof. In general, a determination of
beneficial ownership in the Series 2001 Notes will be subject to the rules,
regulations and procedures governing the Depositary and institutions that have
accounts with the Depositary or a nominee thereof ("Participants").

For purposes of this section, an interest in a Series 2001 Note held in tenancy
by the entirety, joint tenancy or by tenants in common will be deemed to be held
by a single Beneficial Owner.

During such time or times as the Series 2001 Notes are not represented by a
Global Security and are issued in definitive form, all references in this
section to Participants and the Depositary, including the Depositary's governing
rules, regulations and procedures shall be deemed deleted, all determinations
which under this section the Participants are required to make shall be made by
the Company.

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      EVENTS OF DEFAULT. The Indenture contains provisions for defeasance at any
time of the indebtedness on this Security or of certain restrictive covenants
and Events of Default with respect to this Security, in each case upon
compliance by the Company with certain conditions set forth therein, which
provisions apply to this Security.

If an Event of Default with respect to Securities of this series shall occur and
be continuing, the principal of the Securities of this series may be declared
due and payable in the manner and with the effect provided in the Indenture.

The Indenture permits, with certain exceptions as therein provided, the
amendment thereof and the modification of the rights and obligations of the
Company and the rights of the Holders of the Securities of each series to be
affected under the Indenture at any time by the Company and the Trustee with the
consent of the Holders of at least a majority in aggregate principal amount of
the Securities at the time Outstanding of each series to be affected. The
Indenture also contains provisions permitting the Holders of specified
percentages in aggregate principal amount of the Securities of each series at
the time Outstanding, on behalf of the Holders of all Securities of such series,
to waive compliance by the Company with certain provisions of the Indenture and
certain past defaults under the Indenture and their consequences. Any such
consent or waiver by the Holder of this Security shall be conclusive and binding
upon such Holder and upon all future Holders of this Security and of any
Security issued upon the registration of transfer hereof or in exchange hereof
or in lieu hereof, whether or not notation of such consent or waiver is made
upon this Security. No reference herein to the Indenture or to Supplemental
Indenture No. 8 and no provision of this Security or of the Indenture or of
Supplemental Indenture No. 8 shall alter or impair the obligation of the
Company, which is absolute and unconditional, to pay the principal of, and
interest on, this Security at the times, place and rate, and in the coin or
currency, herein prescribed.

      TRANSFER OR EXCHANGE OF SERIES 2001 NOTES. As provided in the Indenture
and subject to certain limitations as set forth therein and in Supplemental
Indenture No. 8, the transfer of this Security is registrable on the Register,
upon surrender of this Security for registration of transfer at the office or
agency of the Company in any place where the principal of and interest on this
Security are payable, duly endorsed by, or accompanied by a written instrument
of transfer in form satisfactory to the Company, the Trustee and the Registrar
duly executed by the Holder hereof or his attorney duly authorized in writing,
and thereupon one or more new Securities of this series and of like tenor, of
authorized denominations and for the same aggregate principal amount, will be
issued to the designated transferee or transferees.

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The Securities of this series are issuable only in registered form without
coupons in denominations of $1,000 and any integral multiple thereof. As
provided in the Indenture and subject to certain limitations therein set forth,
Securities of this series are exchangeable for a like aggregate principal amount
of Securities of this series of a like tenor of a different authorized
denomination, as requested by the Holder surrendering the same.

No service charge shall be made for any such registration of transfer or
exchange, but the Company may require payment of a sum sufficient to cover any
tax or other governmental charge payable in connection therewith.

Prior to due presentment of this Security for registration of transfer, the
Company, the Trustee and any agent of the Company or the Trustee may treat the
person in whose name this Security is registered as the owner hereof for all
purposes, whether or not the Security be overdue, and neither the Company, the
Trustee nor any such agent of the Company or the Trustee shall be affected by
notice to the contrary.

THIS SECURITY SHALL BE GOVERNED BY AND CONSTRUED IN ACCOR DANCE WITH THE LAWS OF
THE STATE OF NEW YORK WITHOUT REGARD TO PRINCIPLES OF CONFLICTS OF LAWS.

All terms used in this Security which are defined in the Indenture shall have
the meanings assigned to them in the Indenture.

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