HP Compaq nx6125 cpu speed

[Mika Penttilä]

Any idea what is scaling the cpu speed in fedora core 4 (HP Compaq 
nx6125 x86-64 fc4)? On AC, pkill -SIGUSR1 cpuspeed, doesn't keep the 
speed at max, after a while it's at min. Even killing cpuspeed and doing 
manually echo "1800000" > scaling_setspeed keeps the cpu at max only a 
while...

Thanks,
Mika