After turning on the WLAN card wifi doesn't work. 

Wifi module: ath5k
System: Linux mrstrauss-laptop 2.6.32-22-generic #36-Ubuntu SMP Thu Jun 3 19:31:57 UTC 2010 x86_64 GNU/Linux
Description: Ubuntu 10.04
Release: 10.04

Network manager tells "Funknerzwerk deaktiviert" (wlan disabled) in applet. 
After running "ifconfig wlan0 up" it prints the Unknown error 132.

After running these commands wifi works fine:

rmmod ath5k
rfkill block all
rfkill unblock all
modprobe ath9k
rfkill unblock all
ifconfig wlan0 up


log: messages

Jun 23 22:38:19 mrstrauss-laptop kernel: [201543.430759] ath5k 0000:14:00.0: PCI INT A disabled
Jun 23 22:38:39 mrstrauss-laptop kernel: [201562.778424] ath5k 0000:14:00.0: PCI INT A -> GSI 19 (level, low) -> IRQ 19
Jun 23 22:38:39 mrstrauss-laptop kernel: [201562.778786] ath5k 0000:14:00.0: registered as 'phy1'
Jun 23 22:38:39 mrstrauss-laptop kernel: [201563.302173] ath5k phy1: Atheros AR2425 chip found (MAC: 0xe2, PHY: 0x70)


kern.log
un 23 22:38:19 mrstrauss-laptop kernel: [201543.430759] ath5k 0000:14:00.0: PCI INT A disabled
Jun 23 22:38:39 mrstrauss-laptop kernel: [201562.778424] ath5k 0000:14:00.0: PCI INT A -> GSI 19 (level, low) -> IRQ 19
Jun 23 22:38:39 mrstrauss-laptop kernel: [201562.778446] ath5k 0000:14:00.0: setting latency timer to 64
Jun 23 22:38:39 mrstrauss-laptop kernel: [201562.778786] ath5k 0000:14:00.0: registered as 'phy1'
Jun 23 22:38:39 mrstrauss-laptop kernel: [201563.287735] ath: EEPROM regdomain: 0x65
Jun 23 22:38:39 mrstrauss-laptop kernel: [201563.287743] ath: EEPROM indicates we should expect a direct regpair map
Jun 23 22:38:39 mrstrauss-laptop kernel: [201563.287754] ath: Country alpha2 being used: 00
Jun 23 22:38:39 mrstrauss-laptop kernel: [201563.287759] ath: Regpair used: 0x65
Jun 23 22:38:39 mrstrauss-laptop kernel: [201563.295414] phy1: Selected rate control algorithm 'minstrel'
Jun 23 22:38:39 mrstrauss-laptop kernel: [201563.302173] ath5k phy1: Atheros AR2425 chip found (MAC: 0xe2, PHY: 0x70)
Jun 23 22:38:39 mrstrauss-laptop kernel: [201563.423663] ADDRCONF(NETDEV_UP): wlan0: link is not ready
Jun 23 22:38:47 mrstrauss-laptop kernel: [201570.838575] wlan0: direct probe to AP 00:1f:3f:a2:13:4f (try 1)
Jun 23 22:38:47 mrstrauss-laptop kernel: [201570.845797] wlan0: direct probe responded
Jun 23 22:38:47 mrstrauss-laptop kernel: [201570.845813] wlan0: authenticate with AP 00:1f:3f:a2:13:4f (try 1)
Jun 23 22:38:47 mrstrauss-laptop kernel: [201570.848353] wlan0: authenticated
Jun 23 22:38:47 mrstrauss-laptop kernel: [201570.848414] wlan0: associate with AP 00:1f:3f:a2:13:4f (try 1)
Jun 23 22:38:47 mrstrauss-laptop kernel: [201570.853527] wlan0: RX AssocResp from 00:1f:3f:a2:13:4f (capab=0x411 status=0 aid=1)
Jun 23 22:38:47 mrstrauss-laptop kernel: [201570.853535] wlan0: associated
Jun 23 22:38:47 mrstrauss-laptop kernel: [201570.856241] ADDRCONF(NETDEV_CHANGE): wlan0: link becomes ready
Jun 23 22:38:47 mrstrauss-laptop kernel: [201571.328745] Intel AES-NI instructions are not detected.
Jun 23 22:38:47 mrstrauss-laptop kernel: [201571.371591] padlock: VIA PadLock not detected.
Jun 23 22:38:58 mrstrauss-laptop kernel: [201581.732538] wlan0: no IPv6 routers present
Jun 23 22:39:33 mrstrauss-laptop kernel: [201616.550381] wlan0: deauthenticating from 00:**:**:**:**:4f by local choice (reason=3)