Hard hang using powerd

[Peter Jeremy]

I have an HP nx6125, running about a two week old 6-stable/amd64 and
I've found that powerd causes random hard hangs (no response to
anything except holding the power-switch down for an extended period).
This occurs with both cpufreq and raw acpi frequency control.

I wrote a perl script to pseudo-randomly change CPU frequency much
as powerd does (but ignoring the load impact) and could trigger the
problem after about 12 minutes with a buildworld happening.

Has anyone else seen this problem?

-- 
Peter Jeremy