RedHat 5.0 and Power Supply.

[hyprreal cdc net]

	Hi, I have a problem ... When in redhat 5.0 When I load a program or just
am sitting there the fan on my Power Supply does some werid stuff... like
speeding up and slowing down... I have an ATX mother board and ATX power
supply so the power supply is controlled by the mother board.. I tried
turning off PM by APM in the BIOS but that didn't work.. The unusual thing
is it Doesn't do this in any other OS (DOS, Windows).. Also I installed a
new power supply and it still does this ... Does redhat send some code to
the Mother board that could do this or is it a hardware incompatibility?

Thanks,
Daniel