OK, here is a tip prompted by Hughmac and his ATI Rage 128 video driver kexts. If you can get a hold of this kext from 10.2.8 Jaguar: AppleADM103x.kext <--- EDIT: NOW UPLOADED Replace the one in Leopard (or Tiger) with this one. The kext should be in /System/Library/Extensions Backup your old copy to somewhere safe, put this kext file in and then repair disk permissions. Reboot. This allows fans to kick in at at a higher temp...148 Fahrenheit instead of 125 Fahrenheit. Tip is courtesy of Tom Vilsack. I will see if I can find my 10.2.8 kext file tonight as it's at home.