Comment 2 for bug 444885

I have a acer aod250 nebook with 9.10 remix on it. all update done (2.6.31-16-generic).
My wireless is a Atheros AR928X driver ath9K
I experience the same beavior, working for a while and than stop. every thing else is still workin but when i tried to shutdown the system freeze.
i install 9.04 same driver and there is no problem with the wireless network.
Wire network is working fine for me.
I tried at my house and at work with the same behaviour.