Hey guys I have a MBP 15" with Snow Leopard, originally had Leopard on it. Now the fan on this laptop is driving me somewhat insane. Looking at the Activity monitor I can see that kernal_task takes up 55 threads. Having said that iStat Pro reports that my CPU is at 78 degree's, now for me thats worrying, because I dont really use the laptop for intensive stuff, unless im playing Football Manager. I have it sat on a hard surface. This also happens when the laptop is idle.