OK, I have an Inspiron 9200 and have never had any issues with it, until this week.  When I boot up, everything is fine and I am able to surf the internet using IE, Opera, or Firefox.  After ten minutes of being connected to my wireless router, none of my browsers will work.  I get a "Network Timeout" error message.  The weird part is I am still able to use Outlook and Yahoo Instant Messenger.  This just started happening this past week.  I have to re-boot the system in order to use my browsers.....for ten minutes.  It always gives me the error at the ten minute mark.  I am using a Linkys modem and a Netgear Router, however I have brought my system to my workplace and I have the same reults.  I have also plugged directly into the router with the same results.  I have run Spybot, Adaware, and AVG with no errors.  I have a second Dell laptop that has not been affected using the same wireless connection. 

Any ideas????