Comment 34 for bug 341952

I noticed it too, that besides regular system crashes ath5k gets "sluggish", as I it seems to have 0 upload and OK download (compared to wired connection).
The problem occurs though not right away, one just needs to wait a day or so....
Tried pinging and got 0% packets lost so far
I will now try to download a heavy file.
Let you know
My question to unggnu is though, do you see in your kern.log stuff like

"ath5k phy0: noise floor calibration timeout"
If you do, you can read this thread linux-kernel-bugs #12647