I have the same problem in Ubuntu 9.10 final with 2.6.31-14-generic 64-bit a new HP dv7 laptop. After some random time (and especially after suspend to RAM), the ath9k driver dies, there are the same/similar messages in dmesg, and KDE keeps asking me for the WPA password. The only way to get the wireless working is to reboot, which is painful.
Neil: I tried rmmod/modprobe, and I did not see those errors.
I have the same problem in Ubuntu 9.10 final with 2.6.31-14-generic 64-bit a new HP dv7 laptop. After some random time (and especially after suspend to RAM), the ath9k driver dies, there are the same/similar messages in dmesg, and KDE keeps asking me for the WPA password. The only way to get the wireless working is to reboot, which is painful.
Neil: I tried rmmod/modprobe, and I did not see those errors.