I have an original unibody MacBook pro. 2.53ghz/15". I've been running iStat menus, and noticed my temperature had almost always been between 60-70 degrees. It would stay in the 60's/70's when doing CPU intensive things too, for example video encoding or rendering... I've Recently upgraded to Snow Leopard and now my temperature is at 140-170 degrees. Was I just running iStat menus in Celsius unknowingly, and am now running it in Fahrenheit, or was I running extremely cool before?