<SUBMISSION>
<ACCESSION-NUMBER>0000950134-07-021875
<TYPE>8-K
<PUBLIC-DOCUMENT-COUNT>2
<PERIOD>20071022
<ITEMS>5.02
<ITEMS>9.01
<FILING-DATE>20071024
<DATE-OF-FILING-DATE-CHANGE>20071024
<FILER>
<COMPANY-DATA>
<CONFORMED-NAME>F5 NETWORKS INC
<CIK>0001048695
<ASSIGNED-SIC>3576
<IRS-NUMBER>911714307
<STATE-OF-INCORPORATION>WA
<FISCAL-YEAR-END>0930
</COMPANY-DATA>
<FILING-VALUES>
<FORM-TYPE>8-K
<ACT>34
<FILE-NUMBER>000-26041
<FILM-NUMBER>071188657
</FILING-VALUES>
<BUSINESS-ADDRESS>
<STREET1>401 ELLIOT AVE WEST
<STREET2>STE 500
<CITY>SEATTLE
<STATE>WA
<ZIP>98119
<PHONE>2062725555
</BUSINESS-ADDRESS>
<MAIL-ADDRESS>
<STREET1>401 ELLIOT AVE WEST
<STREET2>STE 500
<CITY>SEATTLE
<STATE>WA
<ZIP>98119
</MAIL-ADDRESS>
<FORMER-COMPANY>
<FORMER-CONFORMED-NAME>F5 LABS INC
<DATE-CHANGED>19990305
</FORMER-COMPANY>
</FILER>
<DOCUMENT>
<TYPE>8-K
<SEQUENCE>1
<FILENAME>v34821e8vk.htm
<DESCRIPTION>FORM 8-K
<TEXT>
<HTML>
<HEAD>
<TITLE>e8vk</TITLE>
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<DIV style="font-family: 'Times New Roman',Times,serif">


<DIV style="width: 100%; border-bottom: 2pt solid black; font-size: 1pt">&nbsp;</DIV>
<DIV style="width: 100%; border-bottom: 1pt solid black; font-size: 1pt">&nbsp;</DIV>




<DIV align="center" style="font-size: 14pt; margin-top: 12pt"><B>UNITED STATES<BR>
SECURITIES AND EXCHANGE COMMISSION</B>
</DIV>

<DIV align="center" style="font-size: 12pt"><B>WASHINGTON, D.C. 20549</B>
</DIV>

<DIV align="center" style="font-size: 18pt; margin-top: 12pt"><B>FORM 8-K</B>
</DIV>


<DIV align="center" style="font-size: 12pt; margin-top: 12pt"><B>CURRENT REPORT</B>
</DIV>


<DIV align="center" style="font-size: 12pt; margin-top: 12pt"><B>Pursuant to Section&nbsp;13 or 15(d) of the Securities Exchange Act of 1934</B>
</DIV>

<DIV align="center" style="font-size: 10pt; margin-top: 12pt"><B>Date of Report (Date of Earliest Event Reported): October&nbsp;22, 2007</B></DIV>

<DIV align="center" style="font-size: 24pt; margin-top: 12pt"><B>F5 Networks, Inc.</B>
</DIV>

<DIV align="center" style="font-size: 10pt; margin-top: 12pt"><DIV style="margin-top: 1px"><FONT style="border-top: 1px solid #000000">(Exact name of registrant as specified in its charter)</FONT></DIV></DIV>

<DIV align="center">
<TABLE style="font-size: 10pt" cellspacing="0" border="0" cellpadding="0" width="100%">
<!-- Begin Table Head -->
<TR valign="bottom">
    <TD width="30%">&nbsp;</TD>
    <TD width="5%">&nbsp;</TD>
    <TD width="30%">&nbsp;</TD>
    <TD width="5%">&nbsp;</TD>
    <TD width="30%">&nbsp;</TD>
</TR>
<!-- End Table Head -->
<!-- Begin Table Body -->
<TR valign="bottom">
    <TD align="center" valign="top">Washington
</TD>
    <TD>&nbsp;</TD>
    <TD align="center" valign="top">000-26041
</TD>
    <TD>&nbsp;</TD>
    <TD align="center" valign="top">91-1714307</TD>
</TR>
<TR valign="bottom"><!-- Blank Space -->
    <TD align="center" valign="top">&nbsp;</TD>
    <TD>&nbsp;</TD>
    <TD align="center" valign="top">&nbsp;</TD>
    <TD>&nbsp;</TD>
    <TD align="center" valign="top">&nbsp;</TD>
</TR>
<TR style="font-size: 1px">
    <TD align="center" valign="top" style="border-top: 1px solid #000000">&nbsp;
</TD>
    <TD>&nbsp;</TD>
    <TD align="center" valign="top" style="border-top: 1px solid #000000">&nbsp;
</TD>
    <TD>&nbsp;</TD>
    <TD align="center" valign="top" style="border-top: 1px solid #000000">&nbsp;</TD>
</TR>
<TR valign="bottom">
    <TD align="center" valign="top">(State or other jurisdiction <BR>
of incorporation)
</TD>
    <TD>&nbsp;</TD>
    <TD align="center" valign="top">(Commission<BR>
File Number)
</TD>
    <TD>&nbsp;</TD>
    <TD align="center" valign="top">(IRS Employer<BR>
Identification No.)</TD>
</TR>
<!-- End Table Body -->
</TABLE>
</DIV>

<DIV align="center" style="font-size: 10pt; margin-top: 12pt">401 Elliott Avenue West<BR>
Seattle, WA 98119</DIV>

<DIV align="center" style="font-size: 10pt; margin-top: 12pt"><DIV style="margin-top: 1px"><FONT style="border-top: 1px solid #000000">(Address of principal executive offices) (Zip Code) </FONT></DIV></DIV>

<DIV align="center">
<TABLE style="font-size: 10pt" cellspacing="0" border="0" cellpadding="0" width="100%">
<!-- Begin Table Head -->
<TR valign="bottom">
    <TD width="47%">&nbsp;</TD>
    <TD width="5%">&nbsp;</TD>
    <TD width="47%">&nbsp;</TD>
</TR>
<!-- End Table Head -->
<!-- Begin Table Body -->
<TR valign="bottom">
    <TD align="center" valign="top">Registrant&#146;s telephone number, including area code
</TD>
    <TD>&nbsp;</TD>
    <TD align="center" valign="top">(206) 272-5555</TD>
</TR>
<!-- End Table Body -->
</TABLE>
</DIV>

<DIV align="center" style="font-size: 10pt; margin-top: 12pt">Not Applicable</DIV>

<DIV align="center" style="font-size: 10pt; margin-top: 12pt"><DIV style="margin-top: 1px"><FONT style="border-top: 1px solid #000000">Former name or former address, if changed since last report</FONT></DIV></DIV>


<DIV align="left" style="font-size: 10pt; margin-top: 6pt">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:
</DIV>

<DIV style="margin-top: 6pt">
<TABLE width="100%" border="0" cellpadding="0" cellspacing="0" style="font-size: 10pt">

<TR valign="top" style="font-size: 10pt; color: #000000; background: transparent">
    <TD width="1%" nowrap align="left"><FONT face="Wingdings">&#111;</FONT></TD>
    <TD width="1%">&nbsp;</TD>
    <TD>Written communications pursuant to Rule&nbsp;425 under the Securities Act (17 CFR 230.425)</TD>
</TR>

<TR>
    <TD style="font-size: 6pt">&nbsp;</TD>
</TR><TR valign="top" style="font-size: 10pt; color: #000000; background: transparent">
    <TD width="1%" nowrap align="left"><FONT face="Wingdings">&#111;</FONT></TD>
    <TD width="1%">&nbsp;</TD>
    <TD>Soliciting material pursuant to Rule&nbsp;14a-12 under the Exchange Act (17 CFR 240.14a-12)</TD>
</TR>

<TR>
    <TD style="font-size: 6pt">&nbsp;</TD>
</TR><TR valign="top" style="font-size: 10pt; color: #000000; background: transparent">
    <TD width="1%" nowrap align="left"><FONT face="Wingdings">&#111;</FONT></TD>
    <TD width="1%">&nbsp;</TD>
    <TD>Pre-commencement communications pursuant to Rule&nbsp;14d-2(b) under the Exchange Act (17 CFR
240.14d-2(b))</TD>
</TR>

<TR>
    <TD style="font-size: 6pt">&nbsp;</TD>
</TR><TR valign="top" style="font-size: 10pt; color: #000000; background: transparent">
    <TD width="1%" nowrap align="left"><FONT face="Wingdings">&#111;</FONT></TD>
    <TD width="1%">&nbsp;</TD>
    <TD>Pre-commencement communications pursuant to Rule&nbsp;13e-4(c) under the Exchange Act (17 CFR
240.13e-4(c))</TD>
</TR>

</TABLE>
</DIV>

<DIV style="width: 100%; border-bottom: 1pt solid black; margin-top: 10pt; font-size: 1pt">&nbsp;</DIV>
<DIV style="width: 100%; border-bottom: 2pt solid black; font-size: 1pt">&nbsp;</DIV>





<P align="center" style="font-size: 10pt"><!-- Folio -->&nbsp;<!-- /Folio -->
</DIV>

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<H5 align="left" style="page-break-before:always">&nbsp;</H5><P>

<DIV style="font-family: 'Times New Roman',Times,serif">
<!-- link2 "Item&nbsp;5.02 Departure of Directors or Principal Officers; Election of Directors; Appointment of Principal Officers" -->

<DIV align="left" style="font-size: 10pt; margin-top: 12pt"><B>Item&nbsp;5.02 Departure of Directors or Principal Officers; Election of Directors; Appointment of
Principal Officers</B>
</DIV>


<DIV align="left" style="font-size: 10pt; margin-top: 6pt">(b):
</DIV>


<DIV align="left" style="font-size: 10pt; margin-top: 6pt">On October&nbsp;22, 2007, Tom Hull announced his intention to resign as Senior Vice President of
Worldwide Sales of F5 Networks, Inc. (the &#147;Company&#148;). The Company&#146;s press release announcing Mr.
Hull&#146;s resignation, which is expected to be effective in mid-November&nbsp;2007, is attached hereto as
Exhibit&nbsp;99.1 and is incorporated herein by reference.
</DIV>
<!-- link2 "Item&nbsp;9.01 Financial Statements and Exhibits" -->

<DIV align="left" style="font-size: 10pt; margin-top: 12pt"><B>Item&nbsp;9.01 Financial Statements and Exhibits</B>
</DIV>


<DIV align="left" style="font-size: 10pt; margin-top: 6pt">(d)&nbsp;Exhibits:
</DIV>

<DIV align="center">
<TABLE style="font-size: 10pt" cellspacing="0" border="0" cellpadding="0" width="100%">
<!-- Begin Table Head -->
<TR valign="bottom">
    <TD width="7%">&nbsp;</TD>
    <TD width="3%">&nbsp;</TD>
    <TD width="90%">&nbsp;</TD>
</TR>
<!-- End Table Head -->
<!-- Begin Table Body -->
<TR valign="bottom">
    <TD valign="top"><DIV style="margin-left:0px; text-indent:-0px">99.1
</DIV></TD>
    <TD>&nbsp;</TD>
    <TD align="left" valign="top">Press Release of F5 Networks, Inc. dated October&nbsp;24, 2007.</TD>
</TR>
<!-- End Table Body -->
</TABLE>
</DIV>


<P align="center" style="font-size: 10pt"><!-- Folio -->&nbsp;<!-- /Folio -->
</DIV>

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<DIV style="font-family: 'Times New Roman',Times,serif">
<!-- link1 "SIGNATURES" -->

<DIV align="center" style="font-size: 10pt; margin-top: 18pt"><B>SIGNATURES</B>
</DIV>


<DIV align="left" style="font-size: 10pt; margin-top: 6pt">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 hereunto duly authorized.
</DIV>

<TABLE width="100%" border="0" cellspacing="0" cellpadding="0" style="font-size: 10pt">
<TR>
    <TD width="48%">&nbsp;</TD>
    <TD width="1%">&nbsp;</TD>
    <TD width="1%">&nbsp;</TD>
    <TD width="35%">&nbsp;</TD>
    <TD width="15%">&nbsp;</TD>
</TR>
<TR>
    <TD valign="top" align="left">&nbsp;</TD>
    <TD colspan="3" align="left">F5 NETWORKS, INC. <BR>
(Registrant) <BR>
&nbsp;</TD>
    <TD>&nbsp;</TD>
</TR><TR>
    <TD align="left">Date: October 24, 2007&nbsp;</TD>
    <TD valign="top"><I>By:</I>&nbsp;&nbsp;</TD>
    <TD colspan="2" style="border-bottom: 1px solid #000000" align="left"><I>/s/ Jeffrey A. Christianson</I>
&nbsp;</TD>
    <TD>&nbsp;</TD>
</TR><TR>
    <TD align="left">&nbsp;</TD>
    <TD>&nbsp;</TD>
    <TD colspan="2" align="left">Jeffrey A. Christianson                    &nbsp;</TD>
    <TD>&nbsp;</TD>
</TR><TR>
    <TD align="left">&nbsp;</TD>
    <TD>&nbsp;</TD>
    <TD colspan="2" align="left">Sr. Vice President, General Counsel and       <BR>
Corporate Secretary&nbsp;</TD>
    <TD>&nbsp;</TD>
</TR>
<TR>
    <TD colspan="5">&nbsp;</TD>
</TR>
</TABLE>


<P align="center" style="font-size: 10pt"><!-- Folio -->&nbsp;<!-- /Folio -->
</DIV>



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<DOCUMENT>
<TYPE>EX-99.1
<SEQUENCE>2
<FILENAME>v34821exv99w1.htm
<DESCRIPTION>EXHIBIT 99.1
<TEXT>
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<DIV style="font-family: 'Times New Roman',Times,serif">


<DIV align="right" style="font-size: 10pt; margin-top: 12pt">EXHIBIT 99.1
</DIV>


<DIV align="left" style="font-size: 10pt; margin-top: 12pt"><B>FOR IMMEDIATE RELEASE</B>
</DIV>

<DIV align="center">
<TABLE style="font-size: 10pt" cellspacing="0" border="0" cellpadding="0" width="100%">
<!-- Begin Table Head -->
<TR valign="bottom">
    <TD width="10%">&nbsp;</TD>
    <TD width="2%">&nbsp;</TD>
    <TD width="88%">&nbsp;</TD>
</TR>
<!-- End Table Head -->
<!-- Begin Table Body -->
<TR valign="bottom">
    <TD valign="top"><DIV style="margin-left:0px; text-indent:-0px"><B>CONTACT:</B>
</DIV></TD>
    <TD>&nbsp;</TD>
    <TD align="left" valign="top">Investor Relations</TD>
</TR>
<TR valign="bottom">
    <TD valign="top"><DIV style="margin-left:0px; text-indent:-0px">&nbsp;
</DIV></TD>
    <TD>&nbsp;</TD>
    <TD align="left" valign="top">John Eldridge</TD>
</TR>
<TR valign="bottom">
    <TD valign="top"><DIV style="margin-left:0px; text-indent:-0px">&nbsp;
</DIV></TD>
    <TD>&nbsp;</TD>
    <TD align="left" valign="top">(206) 272-6571</TD>
</TR>
<TR valign="bottom">
    <TD valign="top"><DIV style="margin-left:0px; text-indent:-0px">&nbsp;
</DIV></TD>
    <TD>&nbsp;</TD>
    <TD align="left" valign="top"><U>j.eldridge@f5.com</U></TD>
</TR>
<TR valign="bottom"><!-- Blank Space -->
    <TD valign="top"><DIV style="margin-left:0px; text-indent:-0px">&nbsp;</DIV></TD>
    <TD>&nbsp;</TD>
    <TD align="left" valign="top">&nbsp;</TD>
</TR>
<TR valign="bottom">
    <TD valign="top"><DIV style="margin-left:0px; text-indent:-0px">&nbsp;
</DIV></TD>
    <TD>&nbsp;</TD>
    <TD align="left" valign="top">Public Relations</TD>
</TR>
<TR valign="bottom">
    <TD valign="top"><DIV style="margin-left:0px; text-indent:-0px">&nbsp;
</DIV></TD>
    <TD>&nbsp;</TD>
    <TD align="left" valign="top">Alane Moran</TD>
</TR>
<TR valign="bottom">
    <TD valign="top"><DIV style="margin-left:0px; text-indent:-0px">&nbsp;
</DIV></TD>
    <TD>&nbsp;</TD>
    <TD align="left" valign="top">(206) 272-6850</TD>
</TR>
<TR valign="bottom">
    <TD valign="top"><DIV style="margin-left:0px; text-indent:-0px">&nbsp;
</DIV></TD>
    <TD>&nbsp;</TD>
    <TD align="left" valign="top"><U>a.moran@f5.com</U></TD>
</TR>
<!-- End Table Body -->
</TABLE>
</DIV>


<DIV align="center" style="font-size: 12pt; margin-top: 18pt"><B>F5 Networks Announces Resignation of Tom Hull</B>
</DIV>


<DIV align="center" style="font-size: 12pt; margin-top: 18pt"><B><I>Mark Anderson Appointed Senior Vice President of Worldwide Sales</I></B>
</DIV>


<DIV align="left" style="font-size: 10pt; margin-top: 6pt"><B>SEATTLE, OCTOBER 24, 2007 </B>&#151; F5 Networks, Inc. (NASDAQ: FFIV) announced today that Tom Hull is
resigning as the company&#146;s Senior Vice President of Worldwide
Sales, effective mid-November&nbsp;2007.
Hull joined the company in October&nbsp;2003. F5 also announced today that Mark Anderson, currently
serving as the company&#146;s Vice President of North American Sales, has been appointed to take over
for Hull as the company&#146;s Senior Vice President of Worldwide Sales.
</DIV>

<DIV align="left" style="font-size: 10pt; margin-top: 6pt">&#147;Tom has built a great team here at F5,&#148; said John McAdam, President and CEO of F5. &#147;We are very
appreciative of his efforts and wish him well in future endeavors. We are pleased that Mark
Anderson will be taking on the key leadership position for worldwide sales. Mark is an outstanding
sales executive with a proven track record, and Tom will work closely with Mark during the
transition.&#148;
</DIV>

<DIV align="left" style="font-size: 10pt; margin-top: 6pt">Mark Anderson has served as F5&#146;s Vice President of North American Sales since October&nbsp;2004. Prior
to joining F5, Anderson served as Executive Vice President of North American Sales at Lucent
Technologies from 2003 to 2004. From 2002 through 2003, Anderson was Vice President of Business
Development at RadioFrame Networks. From 1997 to 2001, he served as a Sales Director at Cisco
Systems, Inc. From 1986 to 1996, he was Vice President of Western U.S. Sales at Comdisco. Anderson
holds a B.A. in Business and Economics from York University in Toronto.
</DIV>

<P align="center" style="font-size: 10pt"><!-- Folio -->&nbsp;<!-- /Folio -->
</DIV>

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<DIV style="font-family: 'Times New Roman',Times,serif">

<DIV align="left" style="font-size: 10pt; margin-top: 12pt"><B>About F5 Networks</B>
</DIV>


<DIV align="left" style="font-size: 10pt; margin-top: 6pt">F5 Networks is the global leader in Application Delivery Networking. F5 provides solutions that
make applications secure, fast and available for everyone, helping organizations get the most out
of their investment. By adding intelligence and manageability into the network to offload
applications, F5 optimizes applications and allows them to work faster and consume fewer resources.
F5&#146;s extensible architecture intelligently integrates application optimization, protects the
application and the network, and delivers application reliability-all on one universal platform.
Over 16,000 organizations and service providers worldwide trust F5 to keep their applications
running. The company is headquartered in Seattle, Washington with offices worldwide. For more
information, go to <U>www.f5.com</U>.
</DIV>

<DIV align="center" style="font-size: 10pt; margin-top: 18pt"># # #
</DIV>



<P align="center" style="font-size: 10pt"><!-- Folio -->&nbsp;<!-- /Folio -->
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