Anyone else have a problem with their G5 fan? They say "quiet fans" but when I have a TV on or iTunes playing (not super loud) I can always hear the fan and it is starting to annoy me. I spent all this money on a machine and I am starting to get frustrated. I cleaned all the dust off the fans and make sure it was getting enough air flow... It's a 1.6 so it should be even quiter than a dual. What gives? Any suggestions? If not, I am going to finally call AppleCare. Cheers.