Document:

Exhibit 10.41

TENTH
LOAN MODIFICATION AGREEMENT

This Tenth Loan
Modification Agreement (this “Agreement”) is entered into as of March 8, 2007
by and between WITNESS SYSTEMS, INC., a Delaware
corporation (“Borrower”), whose address is 300 Colonial Center Parkway,
Roswell, Georgia 30076, and SILICON VALLEY BANK
(“Lender”), a California-chartered bank with a principal place of business at
3003 Tasman Drive, Santa Clara, CA 95054 and with a loan production office
located at 3353 Peachtree Road, Suite M-10, Atlanta, GA 30326.

WHEREAS, among
other indebtedness which may be owing by Borrower to Lender, Borrower is
indebted to Lender pursuant to, among other documents, a Loan and Security
Agreement, dated April 3, 2002, as may be amended from time to time, in the original
principal amount of Fifteen Million Dollars ($15,000,000) (the “Loan Agreement”;
the Loan Agreement together with all other documents evidencing or securing the
indebtedness shall be referred to as the “Existing Loan Documents”);

WHEREAS, the Loan
Agreement provides for, among other things, a Committed Revolving Line in the
original principal amount of Fifteen Million Dollars ($15,000,000)
(hereinafter, all indebtedness owing by Borrower to Lender shall be referred to
as the “Indebtedness”); and

WHEREAS, Borrower
has requested that Lender reduce the amount of the Committed Revolving Line and
to amend the Loan Agreement in other respects, and Lender is willing to do so,
subject to the terms and conditions set forth herein.

NOW, THEREFORE, in
consideration of the foregoing premises, and other good and valuable
consideration, the receipt and legal sufficiency of which is hereby
acknowledged, the parties hereto hereby agree as follows:

1.             DEFINITIONS.  All capitalized terms used herein and not
otherwise defined shall have the meanings given to such terms in the Loan
Agreement.

2.             MODIFICATIONS TO LOAN AGREEMENT.  The Loan Agreement is hereby amended as
follows:

2.1.          Committed Revolving Line.  The Loan Agreement is hereby amended by
deleting Section 2.1 in its entirety and by substituting therefor a new Section
2.1 to read as follows:

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), 

minus (iii)
the Cash Management Sublimit and minus (iv) the FX Reserve; provided, however,
that on any day on which Borrower meets the Unrestricted Cash Threshold, the
restriction in clause (i)(B) above shall not apply. Amounts borrowed under this
Section may be repaid and reborrowed during the term of this Agreement. All
advances shall be evidenced by the Revolving Promissory Note to be executed and
delivered by Borrower to Bank and shall be repaid in accordance with the terms
of the Revolving Promissory Note.

(b)           To obtain an
Advance, Borrower must notify Bank by facsimile or telephone by 3:00 p.m.
Eastern 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
(the “Payment/Advance Form”).  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.  For purposes of this Section 2.1.1(b), Bank
may rely on any telephone notice given by a person whom Bank reasonably
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.

(d)           Bank’s obligation to
lend the undisbursed portion of the Committed Revolving Line will terminate if,
in Bank’s sole discretion, there has been a material adverse change in the
general affairs, management, results of operation, condition (financial or
otherwise) or 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.

2.1.2        Cash Management Services.

Borrower may use up to One Million Dollars ($1,000,000) less the outstanding
amount of the FX Reserve (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”). Such aggregate amounts utilized under the Cash
Management Services Sublimit will at all times reduce the amount otherwise
available to be borrowed under the Committed Revolving Line.  Any amounts Bank pays on behalf of Borrower
or any amounts that are not paid by Borrower for any Cash Management Services
will be treated as Advances under the Committed Revolving Line and will accrue
interest at the rate for Advances.

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, the Cash Management Sublimit and the FX Reserve; however, the face
amount of outstanding Letters of Credit (including drawn but unreimbursed
Letters of Credit) may not at any time exceed One Million Dollars
($1,000,000).  Each Letter of Credit will
have an expiry date of no later than one hundred eighty (180) days after the
Revolving Maturity Date, but Borrower’s obligations to reimburse Bank under the
Letters of Credit will be secured by cash on terms acceptable to Bank at any
time after the occurrence of any Event of Default or after 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. 
Prior to or simultaneously with the opening of each Letter of Credit,
Borrower shall pay to Bank, a letter of credit fee (each a “Letter of Credit
Fee” and collectively the “Letter of Credit Fees”) in an amount equal to three
quarters of one percent (.75%) per annum of the face amount of the Letter of
Credit.  Such Letter of Credit Fees shall
be paid in advance upon the issuance of the Letter of Credit and upon each
anniversary thereof, if any.  In addition,
Borrower shall pay to Bank any and all additional issuance, negotiation,
processing, transfer or other fees to the extent and as and when required by
Bank.

2.1.4        Foreign Exchange Sublimit.

If there is availability under the Committed Revolving Line and the
Borrowing Base, then Borrower may enter in foreign exchange forward contracts
with the Bank under which Borrower commits to purchase from or sell to Bank a
set amount of foreign currency more than one business day after the contract
date (the “FX Forward Contract”).  Bank
will subtract 10% of each outstanding FX Forward Contract from the foreign
exchange sublimit (the “FX Reserve”) which is a maximum of an amount equal to
One Million Dollars ($1,000,000)  minus
all amounts for services then utilized under the Cash Management Services
Sublimit.  The total FX Forward Contracts
at any one time may not exceed 10 times the amount of the FX Reserve.  Bank may terminate the FX Forward Contracts
if an Event of Default occurs.

2.2           Definitions.  The Loan Agreement is hereby further amended
by deleting the definitions of “Committed Revolving Line”
and “Revolving Maturity Date” contained in
Section 13.1 of the Loan Agreement in their entirety, and by substituting the
following new definitions:

“Committed Revolving Line”
is Advances and other Credit Extensions of up to Two Million Dollars ($2,000,000)
at any one time outstanding.

“Revolving Maturity Date”
is March 7, 2008.

3.             LOAN FEE.  To induce Lender to execute and deliver this
Agreement and to agree to the modifications to the Loan Agreement contained
herein, Borrower shall pay to Lender a loan fee in the amount of up to Ten
Thousand Dollars ($10,000) (the “Loan Fee”), which shall accrue and be payable
in four installments in the amount of Two Thousand Five Hundred Dollars
($2,500) each, with the first such installment accruing and being payable upon
the execution and delivery of this Agreement by Borrower, and second through
fourth such installments accruing and being payable on that date which is the
three, six and nine month anniversary of the date of this Modification,
respectively; provided, however, that notwithstanding the foregoing, the Loan
Fee shall cease to accrue after the Loan Agreement has terminated and all
Indebtedness and other Obligations owing thereunder have been repaid in their
entirety.  The Loan Fee, once and to the extent
accrued, shall be fully earned and shall not be subject to rebate or reduction
for any reason.

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

5.             NO DEFENSES OF BORROWER.  Borrower agrees that it has no defenses
against the obligations to pay any amounts under the Indebtedness.

6.             CONTINUING VALIDITY.  Borrower understands and agrees that in
modifying the existing Indebtedness, Lender is relying upon Borrower’s representations,
warranties, and agreements, as set forth in the Existing Loan Documents.  Except as expressly modified pursuant to this
Agreement, the terms of the Existing Loan 

Documents remain
unchanged and in full force and effect. 
Lender’s agreement to modifications to the existing Indebtedness
pursuant to this Agreement in no way shall obligate Lender to make any future
modifications to the Indebtedness. 
Nothing in this Agreement shall constitute a satisfaction of the
Indebtedness.  It is the intention of
Lender and Borrower to retain as liable parties all makers and endorsers of
Existing Loan Documents, unless the party is expressly released by Lender in
writing.  No maker, endorser, or
guarantor will be released by virtue of this Agreement.  The terms of this paragraph apply not only to
this Agreement, but also to all subsequent loan modification agreements.

7.             EXPENSES.  Borrower shall reimburse Lender for all
out-of-pocket expenses, including, but not limited to, reasonable attorneys’
fees and expenses, incurred by Lender in connection with this Agreement.

8.             NEGATIVE PLEDGE.  Borrower and Lender are parties to that
certain Negative Pledge Agreement, dated as of April 3, 2002 (the “Negative
Pledge Agreement”).  Borrower hereby
acknowledges and agrees that the Negative Pledge Agreement, and Borrower’s
obligations thereunder, remain in full force and effect, without release,
diminution or impairment, notwithstanding the execution and delivery of this
Agreement.

9.             LIMITATION.  This Agreement is limited to the matters
expressly set forth above and shall not be deemed to waive or modify any other
term of the Loan Agreement or Loan Documents, each of which is hereby ratified
and reaffirmed, or to consent to any subsequent failure of Borrower to comply
with any term or provision of the Loan Agreement or the Loan Documents, each of
which shall remain in full force and effect.

10.           CONDITIONS.  The effectiveness of this Agreement is
conditioned upon:  (a) Borrower’s
execution and delivery of this Agreement, (b) Borrower’s payment of the Loan
Fee payable on the date hereof pursuant to Section 3 hereof and all outstanding
legal fees and expenses and (c) such other instruments, documents and
agreements as Lender or its counsel shall request.

[signatures appear
on following page]

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

	
  

  	
  LENDER:

  	
   

  
	
   

  	
   

  	
   

  
	
   

  	
  SILICON
  VALLEY BANK

  	
   

  
	
   

  	
   

  	
   

  
	
   

  	
  By:

  	
   

  
	
   

  	
  Name:

  	
   

  
	
   

  	
  Title:

  	
   

  
	
   

  	
   

  	
   

  
	
   

  	
  BORROWER:

  	
   

  
	
   

  	
   

  	
   

  
	
   

  	
  WITNESS
  SYSTEMS, INC.

  	
   

  
	
   

  	
   

  	
   

  
	
   

  	
  By:

  	
   

  
	
   

  	
  Name:

  	
   

  
	
   

  	
  Title:Exhibit
10.1

VIA FACSIMILE
954-217-1710

March 26, 2007

Mr. Jay Pat Richardson

1270 Leeward Way

Weston, FL 33327

Dear Mr.
Richardson:

The following
offer of employment is presented for your formal acceptance:

1.               Position of Vice
President of Finance, Biomet, Inc.

2.               Annual salary of $
250,000 per year.  Bi-weekly salary at
commencement of employment will be $ 9,615.38, to be reviewed in December 2007.

3.               Inclusion
in the Biomet, Inc. Management Merit Bonus program with a target

bonus
of 60% of base salary.

4.               A car allowance of
$13,000.00 annually, which will be paid with bi-weekly payroll in the amount of
$ 500.00 per pay period.

5.               Two (2) weeks
vacation in calendar year 2007.

6.               Subject to
compliance with applicable state and federal securities laws, and subject to
closing of the Agreement and Plan of Merger among the Company, LVB Acquisition,
LLC and LVB Acquisition Merger Sub, Inc., dated December 18, 2006 (the “Transaction
Agreement”), you will be granted an equity interest in Biomet, Inc. or one of
its affiliates pursuant to an equity incentive plan, the terms and conditions
of which will be determined by the private equity firms that have agreed to
acquire Biomet, Inc.  Your equity
interest in the new Biomet entity will be commensurate with your position with
the Company.

In
the event that the Transaction Agreement is terminated, you will be entitled to
equity awards issued by the Compensation and Stock Option

Committee
of Biomet’s Board of Directors that are commensurate with your position with
the Company.  The option will be subject
to the terms and conditions applicable to options granted under Biomet, Inc.’s
2006 Equity Incentive Plan, as described in that Plan and the applicable stock
option agreement.  The exercise price per
share will be equal to the fair market value per share on the date the option
is granted.

7.               Inclusion in the
Executive Severance Plan and a Change in Control Agreement.

8.               Group medical and
life insurance coverage effective your actual date of hire, to also include
long-term disability coverage.  Biomet is
currently paying the full premium for these plans.

9.               Inclusion in the
Employee Stock Bonus Plan, and 401(k) Profit Sharing Plan, in accordance with
each plan’s provisions.

10.              All
other benefits and programs offered by Biomet, Inc. in accordance with

each
plan’s provisions.

11.              Brad Tandy, Biomet’s
Acting General Counsel, is in the process of preparing    a Confidentiality, Non-Disclosure and
Non-Competition Agreement for your review and signature.  You will agree to sign Biomet’s
Confidentiality, Non-Disclosure and Non-Competition Agreement and abide by its
terms.

12.              Relocation package
to include:

A.                Reimbursement for
your actual and reasonable relocation expenses for personal property from
Weston, FL by a household mover acceptable to both yourself and Biomet.  We will require two (2) quotes and the
coordination of movers will be done by Darlene Whaley in the Human Resources
Department of Biomet.  Biomet will not
consider charges for unpacking belongings in Warsaw, IN.

B.                  The Company will
reimburse reasonable costs for two (2) trips, of up to six (6) days
house-hunting in Warsaw.  This includes
reimbursement for mileage, meals at $25.00 per day per person, lodging, and any
other reasonable costs.

C.                  The Company will
reimburse the real estate agent’s commission to a maximum of 5% of the sales
price of your current home.

D.                 The Company will
pay your  temporary housing expenses for
a period of thirty (30) days in connection with your relocation. .  Upon your request, this allowance can be
applied to either your monthly rent or existing house payment, whichever is
greater.

Should your
employment be terminated for any reason during (i) your first year of
employment, you will reimburse 100% of your actual relocation expenses, (ii) your
second year of employment , you will reimburse 66% of your actual relocation
expenses and (iii) your third year of employment, you will reimburse 33% of
your actual relocation expenses.

Your formal
acceptance of this offer may be accomplished by signing where indicated below,
and returning the original to my attention by Friday, March 30, 2007.  If we do not receive your signed letter by
this date, the offer is void.  Your actual
date of hire will be mutually agreed upon between you and Jeff Binder.

All offers of
employment are contingent upon the negative results of a drug and alcohol
screen which must be completed before your actual date of hire.

As we anticipate
your prompt reply, please feel free to contact Brad Tandy or myself with any
questions.  Welcome to the Biomet Team!

Sincerely,

 

	
  /s/ Darlene
  Whaley

  	
   

  	
   

  	
   

  	
   

  

Darlene Whaley

SR VP Human Resources

Biomet, Inc.

ACKNOWLEDGED AND
AGREED:

	
  /s/ Jay Pat Richardson

  	
   

  	
   

  	
   

  	
   

  
	
  Jay Pat
  Richardson

  	
   

  	
   

  

 

	
  Cc:

  	
  Bradley J. Tandy

  
	
   

  	
  Senior Vice
  President, Acting General Counsel and Secretary

  
	
   

  	
  Biomet, Inc.

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