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My MBP 2.4GHz, Folding@Home running with close to 100% on both cores all day:


CPU A -- 71˚C
GPU Diode -- 68˚C
GPU Heatsink -- 60˚C
Heatsink A -- 55˚C
Heatsink B -- 45˚C
Enclosure Bottom -- 36˚C
Memory Controller -- 54˚C
Hard Drive -- 40˚C


This is sitting on a desk with less than ideal ventilation. Just to give an idea of non-idle temperatures.
 
smcfancontrol really makes a difference. I'm running @ 46 cpu right now (safari/transmission) when I used to be running @ around mid 50s to mid 60s.
 
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