I also have the same problem. Im using a linksys router, model number BEFSR41 ver.2 and i too am having problem connecting to the internet. The router is working fine as my pc is picking up the network. And other computers on the network can all access the internet fine. This isnt the first time it is has happened to me. The last few times, ive had to resort to formatting the computer. Which then fixed the problem. But this time round id rather not have to resort to formatting. Ive Installed all my drivers again. Tryed running the linksys setup wizard again. Which picks up the network and installs fine. but when it gos to take me to the linksys page after the setup, i get WORK OFFLINE.
Any Help would be much appreciated !