iMac running too hot? I noticed my mid-2011 Core i5 iMac felt a bit too hot on the back. So i checked my iStat dashboard widget, Here are the temperatures:


HD: 52 degrees celsius 
CPU: 49
Ambient: 35
GPU Diode: 55
GPU Heatsink: 56
Mem Controller: 55
Optical Drive: 48
Power supply 2: 66


Are these temperatures normal or should i be worried? I used to have a non-unibody MacBook Pro which also used to run hot(much hotter then this) which eventually had a logic board failure when it was just about a year and half old. Same thing happened to my brother's six months old unibody white MacBook.
These temperatures are completely normal.