I upgraded our Wireless LAN Controller (4402-25) from version 188.8.131.52 to 184.108.40.206. We have 16 Symbol/Telxon PTC-960SL mobile computers that we use to telnet to a server running AIX. They will no longer connect to the server after the upgrade to the wireless LAN controller. The mobile computers appear under "Clients" as "Associated" and "Authenticated" but they timeout after 30 seconds because they can't connect to the server. I have performed a Link Test with success, but I can't ping the mobile computers from a the controller or a computer. I have submitted a service request to TAC, but haven't had much success in resolving the porblem.