Having weird problem as well. Bought a new VAIO w/Vista Home Edition and upgraded to Vista Ultimate due to work requirements. At work, connects fine to the wireless network, but won't remember the WEP key, which has to be entered each time . . .

At home, it gets downright strange. I too am able to connect, but "local access" only. If I go to Device Manager and uninstall my wireless device (but NOT the driver), the device will reinstall and work perfectly. The MS tech guy I spoke with is baffled as well.

Try the uninstall - - - it is a work-around until the cause is determined.