Hi,

this is definetly a driver issue with ath5k (driver for Atheros
wireless). All users I found who reported the same issue had an Atheros
chipset and I am having this issue as well. Please see #434073 and
#430420 as well.

The sympton is not just that syslog message but also an periodically
lagging connection over wireless. I have had this issue a while before
with an Atheros chipset and ath5k, I think it was some problem with
setting the wireless radio (frequency hopping or adjust of signal
strength, I don't remember). However, I never had this issue with any
other wireless chipset neither it occurred with the old popular driver
"madwifi" for Atheros. I will try to upgrade to a more recent version of
ath5k and see if that fixes it.


Adrian

-- 
WARNING: at /build/buildd/linux-2.6.31/include/net/mac80211.h:2104 
minstrel_get_rate+0x1ef/0x470 [mac80211]()
https://bugs.launchpad.net/bugs/429855
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