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

                                  SCHEDULE 13D
                                  (RULE 13D-1)

           INFORMATION TO BE INCLUDED IN STATEMENTS FILED PURSUANT TO
                   RULE 13D-1(A) AND AMENDMENTS THERETO FILED
                           PURSUANT TO RULE 13D-2(A).
                               (AMENDMENT NO. 1)*

                                F5 NETWORKS, INC.
--------------------------------------------------------------------------------
                                (Name of Issuer)

                           COMMON STOCK, NO PAR VALUE
--------------------------------------------------------------------------------
                         (Title of Class of Securities)

                                    315616102
             -------------------------------------------------------
                                 (CUSIP Number)
--------------------------------------------------------------------------------

                                  URSULA RANIN
                                NOKIA CORPORATION
                                KEILALAHDENTIE 4
                                  P.O. BOX 226
                              FIN-00045 NOKIA GROUP
                                     FINLAND
                                011-358-9-180-71

                                    COPY TO:
                                 SCOTT D. MILLER
                             SULLIVAN & CROMWELL LLP
                              1870 EMBARCADERO ROAD
                            PALO ALTO, CA 94303-3308
                                 (650) 461-5600
--------------------------------------------------------------------------------
            (Name, Address and Telephone Number of Person Authorized
                     to Receive Notices and Communications)


                                   MAY 1, 2003
             -------------------------------------------------------
             (Date of Event which Requires Filing of this Statement)

If the filing person has previously  filed a statement on Schedule 13G to report
the  acquisition  which is the subject of this  Schedule 13D, and is filing this
schedule because of Rule 13d-1(e), 13d-1(f) or 13d-1(g), check the following box
[_].

NOTE:  Schedules  filed in paper format shall include a signed original and five
copies of the  schedule,  including  all  exhibits.  See Rule 13d-7(b) for other
parties to whom copies are to be sent.

*The  remainder of this cover page shall be filled out for a reporting  person's
initial filing on this form with respect to the subject class of securities, and
for  any  subsequent   amendment   containing   information  which  would  alter
disclosures provided in a prior cover page.

The information required on the remainder of this cover page shall not be deemed
to be "filed" for the purpose of Section 18 of the  Securities  Exchange  Act of
1934 (the  "Exchange  Act") or  otherwise  subject  to the  liabilities  of that
section of the Exchange Act but shall be subject to all other  provisions of the
Exchange Act (however, see the Notes).

                               Page 1 of 12 Pages


                                  SCHEDULE 13D

---------------------                                      ---------------------
CUSIP NO.  315616102                                       PAGE 2 OF 12 PAGES
---------------------                                      ---------------------
--------------------------------------------------------------------------------
 1.  NAMES OF REPORTING PERSONS
     I.R.S. IDENTIFICATION NOS. OF ABOVE PERSONS

     NOKIA FINANCE INTERNATIONAL B.V.
--------------------------------------------------------------------------------
 2.  CHECK THE APPROPRIATE BOX IF A MEMBER OF A GROUP*                  (a)  [ ]
                                                                        (b)  [ ]
--------------------------------------------------------------------------------
 3.  SEC USE ONLY

--------------------------------------------------------------------------------
 4.  SOURCE OF FUNDS*

     WC
--------------------------------------------------------------------------------
 5.  CHECK BOX IF DISCLOSURE OF LEGAL PROCEEDINGS IS REQUIRED PURSUANT TO
     ITEMS 2(d) OR 2(e)                                                      [ ]
--------------------------------------------------------------------------------
 6.  CITIZENSHIP OR PLACE OF ORGANIZATION

     THE NETHERLANDS
--------------------------------------------------------------------------------
                 7.  SOLE VOTING POWER
  NUMBER OF          0
    SHARES       ---------------------------------------------------------------
BENEFICIALLY     8.  SHARED VOTING POWER
  OWNED BY           2,466,421 SHARES OF COMMON STOCK
    EACH         ---------------------------------------------------------------
 REPORTING       9.  SOLE DISPOSITIVE POWER
   PERSON            0
    WITH         ---------------------------------------------------------------
                 10. SHARED DISPOSITIVE POWER
                     2,466,421 SHARES OF COMMON STOCK
--------------------------------------------------------------------------------
11.  AGGREGATE AMOUNT BENEFICIALLY OWNED BY EACH REPORTING PERSON

     2,466,421 SHARES OF COMMON STOCK
--------------------------------------------------------------------------------
12.  CHECK BOX IF THE AGGREGATE AMOUNT IN ROW (11) EXCLUDES CERTAIN SHARES*
                                                                             [ ]
--------------------------------------------------------------------------------
13.  PERCENT OF CLASS REPRESENTED BY AMOUNT IN ROW (11)

     9.4% OF COMMON STOCK
--------------------------------------------------------------------------------
14.  TYPE OF REPORTING PERSON*

     CO
--------------------------------------------------------------------------------
                     *SEE INSTRUCTIONS BEFORE FILLING OUT!
          INCLUDE BOTH SIDES OF THE COVER PAGE, RESPONSES TO ITEMS 1-7
      (INCLUDING EXHIBITS) OF THE SCHEDULE, AND THE SIGNATURE ATTESTATION.



                                  SCHEDULE 13D

---------------------                                      ---------------------
CUSIP NO. 315616102                                        PAGE 3 OF 12 PAGES
---------------------                                      ---------------------
--------------------------------------------------------------------------------
 1.  NAMES OF REPORTING PERSONS
     I.R.S. IDENTIFICATION NOS. OF ABOVE PERSONS

     NOKIA CORPORATION
--------------------------------------------------------------------------------
 2.  CHECK THE APPROPRIATE BOX IF A MEMBER OF A GROUP*                  (a)  [ ]
                                                                        (b)  [ ]
--------------------------------------------------------------------------------
 3.  SEC USE ONLY

--------------------------------------------------------------------------------
 4.  SOURCE OF FUNDS*

     AF
--------------------------------------------------------------------------------
 5.  CHECK BOX IF DISCLOSURE OF LEGAL PROCEEDINGS IS REQUIRED PURSUANT TO
     ITEMS 2(d) OR 2(e)                                                      [ ]
--------------------------------------------------------------------------------
 6.  CITIZENSHIP OR PLACE OF ORGANIZATION

     REPUBLIC OF FINLAND
--------------------------------------------------------------------------------
                 7.  SOLE VOTING POWER
  NUMBER OF          0
    SHARES       ---------------------------------------------------------------
BENEFICIALLY     8.  SHARED VOTING POWER
  OWNED BY           2,466,421 SHARES OF COMMON STOCK
    EACH         ---------------------------------------------------------------
 REPORTING       9.  SOLE DISPOSITIVE POWER
   PERSON            0
    WITH         ---------------------------------------------------------------
                 10. SHARED DISPOSITIVE POWER
                     2,466,421 SHARES OF COMMON STOCK
--------------------------------------------------------------------------------
11.  AGGREGATE AMOUNT BENEFICIALLY OWNED BY EACH REPORTING PERSON

     2,466,421 SHARES OF COMMON STOCK
--------------------------------------------------------------------------------
12.  CHECK BOX IF THE AGGREGATE AMOUNT IN ROW (11) EXCLUDES CERTAIN SHARES*
                                                                             [ ]
--------------------------------------------------------------------------------
13.  PERCENT OF CLASS REPRESENTED BY AMOUNT IN ROW (11)

     9.4% OF COMMON STOCK
--------------------------------------------------------------------------------
14.  TYPE OF REPORTING PERSON*

     CO
--------------------------------------------------------------------------------
                     *SEE INSTRUCTIONS BEFORE FILLING OUT!
          INCLUDE BOTH SIDES OF THE COVER PAGE, RESPONSES TO ITEMS 1-7
      (INCLUDING EXHIBITS) OF THE SCHEDULE, AND THE SIGNATURE ATTESTATION.




         The  statement  on  Schedule  13D  previously  filed by  Nokia  Finance
International B.V., a private company with limited liability  incorporated under
the laws of The  Netherlands  ("NFI"),  and  Nokia  Corporation,  a  corporation
incorporated under the laws of the Republic of Finland  ("Nokia"),  with respect
to shares of Common  Stock  (the  "Common  Stock")  of F5  Networks,  Inc.  (the
"Company")  is  hereby   amended  and   supplemented.   Except  as  amended  and
supplemented  hereby,  the  original  statement  on Schedule 13D remains in full
force and effect.  NFI and Nokia are collectively  referred to as the "Reporting
Persons."

ITEM 1.  PURPOSE OF TRANSACTION.

         As described in the original  statement on Schedule 13D,  filed on July
9, 2001, the Investor's Rights Agreement  entitled NFI to nominate one member to
the Company's Board of Directors.  The Investor's Rights Agreement also provides
that as long as NFI holds five or more percent of the outstanding  capital stock
of the Company,  the Company will use its best efforts to cause and maintain the
election  to the  Board of  Directors  of a  representative  designated  by NFI.
Pursuant to the Investor's  Rights  Agreement,  NFI nominated  Kenny Frerichs to
serve on the  Board of  Directors.  Kenny  Frerichs  resigned  from the Board of
Directors effective May 1, 2003.

         The Warrant described in the original statement on Schedule 13D expired
ten business days after December 31, 2002.

ITEM 4.  PURPOSE OF THE TRANSACTION.

         Except as set forth above,  at the present time the  Reporting  Persons
have  no  plans  or  proposals  which  relate  to or  would  result  in (a)  the
acquisition  by any  person of  additional  securities  of the  Company,  or the
disposition  of  securities  of  the  Company,  (b) an  extraordinary  corporate
transaction,  such as a merger,  reorganization  or  liquidation,  involving the
Company or any of its subsidiaries,  (c) a sale or transfer of a material amount
of assets  of the  Company  or any of its  subsidiaries,  (d) any  change in the
present board of directors or management of the Company,  including any plans or
proposals  to change the  number or term of  directors  or to fill any  existing
vacancies on the board, (e) any material change in the present capitalization or
dividend  policy of the Company,  (f) any other material change in the Company's
business or corporate structure, (g) changes in the Company's charter, bylaws or
instruments  corresponding  thereto  or  other  actions  which  may  impede  the
acquisition  of control of the Company by any person,  (h) a class of securities
of the issuer to be delisted from a national  securities exchange or to cease to
be authorized to be quoted in an inter-dealer  quotation  system of a registered
national securities association, (i) a class of equity securities of the Company
becoming  eligible for termination of registration  pursuant to Section 12(g)(4)
of the Exchange Act or (j) any action similar to any of those enumerated above.

         Each  Reporting  Person  expects to  evaluate  on an ongoing  basis the
Company's financial condition,  business operations and prospects,  market price
of the  Common  Stock,  conditions  in  securities  markets  generally,  general
economic and industry conditions and other factors.  Accordingly, each Reporting
Person  reserves the right to change its plans and intentions at any time, as it
deems  appropriate.  In particular,  each Reporting  Person may, at any time and
from time to time: acquire additional Common Stock or securities  convertible or
exchangeable for Common Stock;  dispose of shares of Common Stock;  and/or enter
into   privately   negotiated   derivative   transactions   with




institutional  counterparties  to hedge  the  market  risk of some or all of its
positions in the Common Stock. Any such transactions may be effected at any time
and from time to time subject to any  applicable  limitations  of the Securities
Act of 1933, as amended.  To the knowledge of each Reporting Person, each of the
persons  listed on Schedule 1 hereto may make the same  evaluation  and reserves
the same rights.

ITEM 5.  INTEREST IN SECURITIES OF THE ISSUER.

         According to the  Company's  current  report on Form 8-K filed on April
23, 2003, the total number of shares of the Company's  Common Stock  outstanding
as of March 31, 2003 was approximately 26,357,000 shares.

         As of the date of the filing of this Statement,  the Reporting  Persons
may be deemed  each to be the  beneficial  owner of  2,466,421  shares of Common
Stock for  purposes  of Rule 13d-3  under the  Exchange  Act,  which  represents
approximately  9.4% of the shares of Common Stock  outstanding as of January 23,
2003.

         The Reporting Persons have the sole power to vote or to direct the vote
or dispose or direct the disposition of 2,466,421 shares of Common Stock. To the
knowledge of the  Reporting  Persons,  there are no shares of Common Stock which
are beneficially owned by any other person referred to in Schedule 1 hereto.

         Except as set forth herein, to the knowledge of the Reporting  Persons,
neither the  Reporting  Persons nor any other  person  referred to in Schedule 1
hereto  beneficially  owns or has  acquired  or disposed of any shares of Common
Stock during the past 60 days.

ITEM 7.  MATERIAL TO BE FILED AS EXHIBITS.

Exhibit A     Agreement  of Joint  Filing,  dated July 9, 2001,  by and  between
---------     Nokia Finance International B.V. and Nokia Corporation (filed with
              the statement on Schedule 13D filed on July 9, 2001).




                                    SIGNATURE

         After reasonable  inquiry and to the best of my knowledge and belief, I
certify that the information  set forth in this Statement is true,  complete and
correct.

May 7, 2003                                 NOKIA FINANCE INTERNATIONAL B.V.


                                            By  /s/ Esa Kaunistola
                                              ----------------------------------
                                              Name:  Esa Kaunistola
                                              Title:  Director


                                            By  /s/ Hannu Mustonen
                                              ----------------------------------
                                              Name:  Hannu Mustonen
                                              Title:  Director


                                            NOKIA CORPORATION


                                            By  /s/ Ursula Ranin
                                              ----------------------------------
                                              Name:  Ursula Ranin
                                              Title:  Vice President and
                                                      General Counsel


                                            By  /s/ Hannu Mustonen
                                              ----------------------------------
                                              Name:  Hannu Mustonen
                                              Title:  Director and Head of
                                                      Corporate Tax Planning





                                   SCHEDULE 1


              DIRECTORS AND EXECUTIVE OFFICERS OF NOKIA CORPORATION


         The  following  table  sets  forth  the  name  and  present   principal
occupation or employment,  and the name,  principal  business and address of any
corporation  or other  organization  in which such  occupation  or employment is
conducted of each director and executive  officer of Nokia  Corporation.  Unless
otherwise  indicated,  the  business  address  of each such  person is c/o Nokia
Corporation  Keilalahdentie 4, P.O. Box 226, FIN-00045 Nokia Group,  Finland and
each person is a citizen of Finland.

Name                                  Present Principal Occupation or Employment
----                                  ------------------------------------------

Board of Directors
------------------

Jorma Ollila.......................   Chairman and CEO, and Chairman of the
                                      Group Executive Board of Nokia
                                      Corporation.

                                      Vice Chairman of Otava Books and Magazines
                                      Group Ltd. Member of the Board of
                                      Directors of Ford Motor Company and UPM-
                                      Kymmene Corporation. Member of The
                                      European Round Table of Industrialists.

Paul J. Collins....................   Vice Chairman of the Board of Directors
Citizenship:  United States           of Nokia Corporation.

                                      Member of the Board of Directors of BG
                                      Group, Genuity Corporation and
                                      Kimberly-Clark Corporation.

Georg Ehrnrooth....................   Chairman of the Board of Directors of Assa
                                      Abloy AB (publ) and Varma-Sampo Mutual
                                      Pension Insurance Company. Vice Chairman
                                      of the Board of Directors of Rautaruukki
                                      Corporation. Member of the Board of
                                      Directors of Oy Karl Fazer Ab, Sandvik AB
                                      (publ), Sampo plc and Wartsila
                                      Corporation. Chairman of The Center for
                                      Finnish Business and Policy Studies (EVA).

Dr. Bengt Holmstrom................   Paul A. Samuelson Professor of Economics
                                      at MIT, joint appointment at the MIT Sloan
                                      School of Management.

                                      Member of the Board of Directors of
                                      Kuusakoski Oy. Member of the American
                                      Academy of Arts and Sciences and Foreign
                                      Member of The Royal Swedish Academy of
                                      Sciences.

Per Karlsson.......................   Independent Corporate Advisor.

                                      Member of the Board of Directors of IKANO
                                      Holdings S.A.

Robert F.W. van Oordt..............   Chairman of Rodamco Europe N.V.
Citizenship:  The Netherlands
                                      Member of the Board of Directors of Fortis
                                      Bank N.V., Schering-Plough Corporation and
                                      Umicore S.A. and member of the Supervisory
                                      Board of Draka Holding N.V.

Marjorie Scardino..................   Chief Executive Officer and member of the
Citizenship: United States            Board of Directors of Pearson plc.

Vesa Vainio........................   Chairman of the Board of Directors of
                                      UPM-Kymmene Corporation and Vice Chairman
                                      of the Board of Directors of Wartsila
                                      Corporation. Chairman of the Board of The
                                      Central Chamber of Commerce of Finland.

Arne Wessberg......................   Chairman of the Board of Directors and
                                      President of Yleisradio Oy (Finnish
                                      Broadcasting Company).

                                      Chairman of the Board of Directors of
                                      Digita Oy. President of the European
                                      Broadcasting Union (EBU) and member of the
                                      Board of Directors of the International
                                      Council of NATAS.

Group Executive Board
---------------------

Jorma Ollila.......................   Chairman and CEO, and Chairman of the
                                      Group Executive Board of Nokia
                                      Corporation.

                                      Vice Chairman of Otava Books and Magazines
                                      Group Ltd. Member of the Board of
                                      Directors of Ford Motor Company and
                                      UPM-Kymmene Corporation. Member of The
                                      European Round Table of Industrialists.

Pekka Ala-Pietila..................   President of Nokia Corporation.

                                      Member of the Supervisory Board of SAP AG,
                                      Member of the Science and Technology
                                      Policy Council of Finland, member of the
                                      Board of the Finnish-American Chamber of
                                      Commerce, Member of the Board of the
                                      Economic Information Bureau.

Dr. Matti Alahuhta.................   President of Nokia Mobile Phones.

                                      Chairman of the Board of The Federation of
                                      Finnish Metal, Engineering and
                                      Electrotechnical Industries, Vice Chairman
                                      of the Board of the Confederation of
                                      Finnish Industry and Employers, member of
                                      the Executive Committee of The
                                      International Institute for Management
                                      Development (IMD).

Sari Baldauf.......................   President of Nokia Networks.

                                      Member of the Board of International Youth
                                      Foundation and Member of The National
                                      Committee for the Information Society
                                      Issues and member of the Board of
                                      Foundation for Economic Education.

Dr. J.T. Bergqvist.................   Executive Vice President and General
                                      Manager, IP Mobility Nokia Networks.

Olli-Pekka Kallasvuo...............   Executive Vice President and CFO of Nokia
                                      Corporation.

                                      Chairman of the Board of Directors of
                                      F-Secure Corporation, Nextrom Holding
                                      S.A. and Sampo plc.




Pertti Korhonen....................   Executive Vice President, Nokia Mobile
                                      Software.

                                      Member of the Board of Directors, QPR
                                      Software Oyj.

Dr. Yrjo Neuvo.....................   Executive Vice President and CTO of Nokia
                                      Mobile Phones.

                                      Vice Chairman of the Board of Directors of
                                      Vaisala Corporation. Member of Finnish
                                      Academy of Technical Sciences, The Finnish
                                      Academy of Science and Letters, and
                                      Academiae Europae, Foreign member of
                                      Royal Swedish Academy of Engineering
                                      Sciences, and Fellow of the Institute of
                                      Electrical and Electronics Engineers.

Veli Sundback......................   Executive Vice President, Corporate
                                      Relations and Trade Policy of Nokia
                                      Corporation.

                                      Chairman of the Board of Directors of
                                      Huhtamaki Oyj. Vice Chairman of the Board
                                      of the International Chamber of Commerce,
                                      Finnish Section, Chairman of the Trade
                                      Policy Committee of The Confederation of
                                      Finnish Industry and Employers and
                                      Chairman of the Board of the Finland-China
                                      Trade Association.

Anssi Vanjoki......................   Executive Vice President of Nokia Mobile
                                      Phones.

                                      Governor of European Foundation of Quality
                                      Management.


      DIRECTORS AND EXECUTIVE OFFICERS OF NOKIA FINANCE INTERNATIONAL B.V.

         The  following  table  sets  forth  the  name  and  present   principal
occupation or employment,  and the name,  principal  business and address of any
corporation  or other  organization  in which such  occupation  or employment is
conducted of each director and executive officer of Nokia Finance  International
B.V. Unless otherwise indicated, the business address of each such person is c/o
Nokia Finance  International B.V.,  Strawinskylaan  3111,  NL-1077ZX  Amsterdam,
Postbus  1469,  1000BL  Amsterdam,  The  Netherlands  and each such  person is a
citizen of Finland.

Name                                  Present Principal Occupation or Employment
----                                  ------------------------------------------

Board of Management
-------------------

Esa Kaunistola.....................   Senior Legal  Counsel of Nokia
                                      Corporation.

Hannu Mustonen.....................   Director and Head of Corporate Tax
                                      Planning of Nokia Corporation.

Bob Elfring........................   Managing Director of Lehman Brothers
Citizenship: The Netherlands          International (Europe).

ABN AMRO Trust Company.............   Trust company.
(Nederland) B.V.
State of Organization: The
Netherlands





Board of Supervisory Directors
------------------------------

Maija Torkko.......................   Senior Vice President and Corporate
                                      Controller of Nokia Corporation.

Timo Ihamuotila....................   Vice President and Corporate Treasurer of
                                      Nokia Corporation.