Using the iStat pro widget, I never see my right fan spinning. My left fan is always spinning. I've had the motherboard replaced in this first gen MBP already. I'm hoping I don't need another one, nor a major tear apart. I use it on an iLap almost exclusively, so it never gets real hot. Should I not trust this widget? I have to say though, I can't hear anything spinning on the right side of the computer. Do I need service? //oops, wrong forum...mods, I meant to post in Macbook Pro forum. Move wherever appropriate please.