I'm at a bit of a loss to explain this. I'm not using the group
scheduler and the load average is less than 0.4. CPU usage does seem to
spike a fair bit (I'm not sure why rhythmbox needs 50%+ for decoding
oggs from time to time) but there always seems to be 20% CPU free...
I don't know where to start debugging this one and I'm suspicious of the
way the problem would happen every 30 seconds too... (this laptop is
using ath5k for its wifi)
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