dmesg from Karmic beta using the standard buildin 'ThinkPad 11a/b/g Wireless LAN Mini Express Adapter' 
03:00.0 Ethernet controller [0200]: Atheros Communications Inc. AR5212 802.11abg NIC [168c:1014] (rev 01)
        Subsystem: IBM Device [1014:058a]

## Loading ath5k from linux-backports-modules after it was installed.
## Mostly unable to connect and extreme low bandwidth when connected.
[  804.258021] ath5k 0000:03:00.0: PCI INT A -> GSI 17 (level, low) -> IRQ 17
[  804.258041] ath5k 0000:03:00.0: setting latency timer to 64
[  804.258070] ath5k 0000:03:00.0: registered as 'phy1'
[  804.409381] ath: EEPROM regdomain: 0x62
[  804.409384] ath: EEPROM indicates we should expect a direct regpair map
[  804.409387] ath: Country alpha2 being used: 00
[  804.409389] ath: Regpair used: 0x62
[  804.413986] phy1: Selected rate control algorithm 'minstrel'
[  804.414705] Registered led device: ath5k-phy1::rx
[  804.414723] Registered led device: ath5k-phy1::tx
[  804.414726] ath5k phy1: Atheros AR5414 chip found (MAC: 0xa3, PHY: 0x61)
[  804.550607] ADDRCONF(NETDEV_UP): wlan0: link is not ready
## Unloading module ath5k from linux-backports-modules:
[ 1096.100351] ath5k 0000:03:00.0: PCI INT A disabled
## Loding module ath5k from linux-image-generic after linux-backports-modules was purged (uninstalled).
## Often unable to connect and unusable low bandwidth when connected.
[ 1192.204103] cfg80211: Calling CRDA to update world regulatory domain
[ 1192.208752] cfg80211: World regulatory domain updated:
[ 1192.208755]  (start_freq - end_freq @ bandwidth), (max_antenna_gain, max_eirp)
[ 1192.208758]  (2402000 KHz - 2472000 KHz @ 40000 KHz), (300 mBi, 2000 mBm)
[ 1192.208761]  (2457000 KHz - 2482000 KHz @ 20000 KHz), (300 mBi, 2000 mBm)
[ 1192.208764]  (2474000 KHz - 2494000 KHz @ 20000 KHz), (300 mBi, 2000 mBm)
[ 1192.208766]  (5170000 KHz - 5250000 KHz @ 40000 KHz), (300 mBi, 2000 mBm)
[ 1192.208769]  (5735000 KHz - 5835000 KHz @ 40000 KHz), (300 mBi, 2000 mBm)
[ 1192.247288] ath5k 0000:03:00.0: PCI INT A -> GSI 17 (level, low) -> IRQ 17
[ 1192.247307] ath5k 0000:03:00.0: setting latency timer to 64
[ 1192.247341] ath5k 0000:03:00.0: registered as 'phy0'
[ 1192.483982] ath: EEPROM regdomain: 0x62
[ 1192.483985] ath: EEPROM indicates we should expect a direct regpair map
[ 1192.483989] ath: Country alpha2 being used: 00
[ 1192.483990] ath: Regpair used: 0x62
[ 1192.486177] phy0: Selected rate control algorithm 'minstrel'
[ 1192.486880] Registered led device: ath5k-phy0::rx
[ 1192.486899] Registered led device: ath5k-phy0::tx
[ 1192.486903] ath5k phy0: Atheros AR5414 chip found (MAC: 0xa3, PHY: 0x61)
[ 1192.584330] ADDRCONF(NETDEV_UP): wlan0: link is not ready
## Manuel activated connection to SSID: 
[ 1244.546784] wlan0: authenticate with AP 00:14:f1:a2:c3:60
[ 1244.551054] wlan0: authenticated
[ 1244.551058] wlan0: associate with AP 00:14:f1:a2:c3:60
[ 1244.601882] wlan0: RX AssocResp from 00:14:f1:a2:c3:60 (capab=0x431 status=0 aid=254)
[ 1244.601885] wlan0: associated
[ 1244.602590] ADDRCONF(NETDEV_CHANGE): wlan0: link becomes ready
[ 1244.706499] padlock: VIA PadLock not detected.
[ 1254.620014] wlan0: no IPv6 routers present