Than it's not powernowd.
I think it would be helpful to have a look at your dmesg and syslog.
Can you also tell us what modules are loaded (lsmod) as well as give us the
output of a cat command of all the files in
/sys/devices/system/cpu/cpu0/cpufreq?
An lspci -vv and lspci -vvn output can also be helpful.
** Changed in: powernowd (Ubuntu)
Sourcepackagename: powernowd => linux-source-2.6.20
Status: Unconfirmed => Needs Info
--
Wrong CPU scaling frequencies
https://launchpad.net/bugs/97042
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