On Karmic, I've got the same problems.
The first message in dmesg is:
ath5k phy0: unsupported jumbo
Followed by a long list of:
ath5k phy0: noise floor calibration timeout (2437MHz)
Also, I noticed when running the command 'top' a process called 'phy'
pops up for only a few miliseconds, using at least 30% CPU.
I use this wirelesscard:
AR2413 802.11bg
On an Acer Aspire 5101AWMLi.
Thanx in advance for helping us out! :)
--
juanty ath5k : disconnection / slow network
https://bugs.launchpad.net/bugs/369005
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