I had no idea Macs were this noisy. All I did was download and view some photographs when the fans kicked in. They make an unholy noise I'm not sure I can be happy with. Even when I quit my tasks, the fans keep going. If I shut down and restart, the fans just kick in as soon as I start viewing pictures. My MBP edits HD video on Final Cut without even blinking. Are there settings for the heat sink fans on Mac or are they just that sensitive? This is a Mac Pro, 2 X Xeon 2.66 ghz, 5 GB RAM, 2 X 500GB Samsung drives.