UNITED STATES
                       SECURITIES AND EXCHANGE COMMISSION
                             Washington, D.C. 20549


                                    FORM 8-K


                                 CURRENT REPORT
                         Pursuant to Section 13 or 15(d)
                     of the Securities Exchange Act of 1934


        Date of Report (Date of earliest event reported): March 28, 2005


                              KEYNOTE SYSTEMS, INC.
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             (Exact name of registrant as specified in its charter)


                                    Delaware
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                 (State or other jurisdiction of incorporation)



         000-27241                                             94-3226488
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        (Commission                                          (IRS Employer
        File Number)                                       Identification No.)


        777 Mariners Island Boulevard, San Mateo, California          94404
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              (Address of principal executive offices)              (Zip Code)


                                 (650) 403-2400
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              (Registrant's telephone number, including area code)


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          (Former name or former address, if changed since last report)


Check the appropriate box below if the Form 8-K filing is intended to
simultaneously satisfy the filing obligation of the registrant under any of the
following provisions (see General Instruction A.2. below):

[ ]     Written communications pursuant to Rule 425 under the Securities Act (17
        CFR 230.425)

[ ]     Soliciting material pursuant to Rule 14a-12 under the Exchange Act (17
        CFR 240.14a-12)

[ ]     Pre-commencement communications pursuant to Rule 14d-2(b) under the
        Exchange Act (17 CFR 240.14d-2(b))

[ ]     Pre-commencement communications pursuant to Rule 13e-4(c) under the
        Exchange Act (17 CFR 240.13e-4(c))






Item 1.01      Entry Into a Material Definitive Agreement.


     Effective March 28, 2005,  Keynote  Systems,  Inc., a Delaware  corporation
("Keynote") entered into a Separation Agreement with Arnold Waldstein,  its Vice
President  of  Marketing  and  Business  Development,  in  connection  with  Mr.
Waldstein's  resignation from Keynote. Under this agreement,  Mr. Waldstein will
continue his employment  with Keynote through June 15, 2005 and will be entitled
to receive a severance  payment in the amount of $21,196.00,  which  constitutes
three months of his annual base salary,  less  applicable  taxes. As part of the
agreement,  Mr.  Waldstein  also  released  Keynote  from any claims he may have
against it.











                                    SIGNATURE

     Pursuant to the requirements of the Securities Exchange Act of 1934, the
registrant has duly caused this report to be signed on its behalf by the
undersigned thereunto duly authorized.


                                  KEYNOTE SYSTEMS, INC.



Date: March 30, 2005              By: /s/ Peter Maloney
                                      ------------------------------------------
                                      Peter Maloney
                                      Vice President and Chief Financial Officer