ive also been seeing all this error messages, wifi sometimes work, most of the time it does not. i installed madwifi to solve this some releases ago, but then some intrepid update broke that and i couldn't get it to work again.
using kernel 2.6.27-7, fresh install from today with all updates.
more errors i got:
ath5k phy0: ath5k_chan_set: unable to reset channel ($freq mhz)
ath5k phy0: noise floor calibration timeout (2437MHz)
hardware is atheros AR 242x in leveno thinkpad x200
ive also been seeing all this error messages, wifi sometimes work, most of the time it does not. i installed madwifi to solve this some releases ago, but then some intrepid update broke that and i couldn't get it to work again.
using kernel 2.6.27-7, fresh install from today with all updates.
more errors i got:
ath5k phy0: ath5k_chan_set: unable to reset channel ($freq mhz)
ath5k phy0: noise floor calibration timeout (2437MHz)
hardware is atheros AR 242x in leveno thinkpad x200