linksys wusb 100 says its connected buts its not help!

Ive been using a linksys wusb 100 v2 on win7 64 bit for months now and there's been nothing wrong at all until a few hours ago when it said it was connected to my router but when i clicked on the connection status it says APv6 connectivity: No Internet access so basicly it says its connected in the system tray in the bottom right but when i go to browse the internet or go into the itunes store log into msn whatever it wont connect ive tryed resetting my router still no luck i have an ipod and i can still connect on that so im sure its my adapter Help is realy needed thanks

Hey i Tried disabling IPv6 but still no luck IPV6 Connectivity: No network access Ipv4 Connectivity: Internet

Have done still no luck sometimes it works and other times it doesn't even though it says its connected and this only started a few days ago if i disconnect then reconnect it works for like 3mins max then goes dead again meanwhile it says its still connected but im not