I found this bug because my t42p was running very hot with Jaunty (I was
running Debian/Sid before). After looking around for a while, I noticed
that the processor was running at 2 MHz all the time, that is, that the
cpu frequency governor was set to 'performance' by default in the
kernel.  I solved the issue by putting:

echo ondemand > /sys/devices/system/cpu/cpu0/cpufreq/scaling_governor

in /etc/rc.local

It really doesn't make sense to have 'performance' as the default
governor for laptops!

Cheers.

-- 
Lenovo T61p is running very hot after Jaunty upgrade
https://bugs.launchpad.net/bugs/361123
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