Comment 22 for bug 568090

I've just installed Ubuntu on a old Toshiba Satellite Pro M50 with a ath5k and its exhibiting this problem as well. The workaround with nohwcrypt solves the problem. I won't be able to test this laptop much longer but thought it worth mentioning it too is an Askey built card:

04:02.0 Ethernet controller: Atheros Communications Inc. AR2413/AR2414 Wireless Network Adapter [AR5005G(S) 802.11bg] (rev 01)
 Subsystem: Askey Computer Corp. Device 7094
 Flags: bus master, medium devsel, latency 168, IRQ 9
 Memory at c0200000 (32-bit, non-prefetchable) [size=64K]
 Capabilities: [44] Power Management version 2
 Kernel driver in use: ath5k
 Kernel modules: ath5k