0000891020-05-000346 10-K/A 5 20050930 20051215 20051215 F5 NETWORKS INC 0001048695 3576 911714307 WA 0930 10-K/A 34 000-26041 051267529 401 ELLIOT AVE WEST STE 500 SEATTLE WA 98119 2062725555 401 ELLIOT AVE WEST STE 500 SEATTLE WA 98119 F5 LABS INC 19990305 10-K/A 1 v15287a1e10vkza.htm AMENDMENT NO.1 TO FORM 10-K EX-23.1 2 v15287a1exv23w1.txt EXHIBIT 23.1 EX-31.1 3 v15287a1exv31w1.htm EXHIBIT 31.1 EX-31.2 4 v15287a1exv31w2.htm EXHIBIT 31.2 EX-32.1 5 v15287a1exv32w1.htm EXHIBIT 32.1