With my eeePC, I need to delete the wireless connection every once in awhile and
set it up again. I am not sure why. The network manager asks for my WPA key, but
entering it does no good. So I delete and add a new wireless connection with the
same key and it works. Being new to wireless, I can't tell you why it is
happening, but it is predictable and the fix works consistently. It is a minor
annoyance.It happens only in Ubuntu (not Xandros).