The load avg is only related to the number of runnable/uninterruptible
processes. There can be hundreds of threads and 0.00 load avg if they
are all waiting or sleeping.

However, your screenshot shows consistent cpu utilization of 15-20%, so
one would think the load avg would be at least 0.2 for at least the 1
minute mark. The load avg is calculated once every 5 seconds inside the
kernel. At that point in time, the average is recomputed using the
current number of runnable/uninterruptible processes. To have a load avg
of 0.00, obviously there could not have been any runnable or
uninterruptible processes in the last 5 minutes during every 5 second
capture point.

I think it would be most helpful to get identical comparisons between
the two distros, preferrably the dmstat output on karmic.

-- 
[karmic] CPU load not being reported accurately
https://bugs.launchpad.net/bugs/513848
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