Created attachment 48422 [details] dmesg I don't know what's going on, but it only happens with every version of the kernel Linux 2.6.38. After an unspecified time, the system (both Ubuntu 10.10 and 11.04) starts to become slow and every wi-fi connection disappears all of a sudden. I can't find anything on the network manager anymore and the process kworker/u:2 "eat" my cpu constantly, getting down and up again, and so on.
Created attachment 48432 [details] dmesg and lspci -vvnn
Closing as obsolete, if this is still seen on modern kernels please update