Hi, I just purchased a new mac pro 8 Core 2.8GHz. I wanted to know if its normal to hear the fan's running when the computer is idling. I have my computer placed on top of my desk and is less then 2 feet away from me. I am just checking to see if this is normal I have never owned a Mac Pro before. The fans aren't making a knocking noise or sqeeking noise. You can just hear them running. Thanks!