CPU usage is low, averaging about 3-8%, usually kernel_task at the top. No errant processes as far as I can tell and the system doesn't feel very hot to the touch. I'm used to the fans running at a constant 1700-1800rpm all the time but lately (the past week maybe) it hasn't gone below 3000. Its not loud, but its definitely noticeable. Temps in iStat show (C); HD: 33 CPU A: 61 Airport: 75 Enclosure Base: 31 Heatsink A: 58 Heatsink B: 59 Mem Bank A1: 52 Northbridge: 55 I know the airport can run hot, but 75C seems way up there. Any idea what's going on here? My macbook is up on a Rain Design M-Stand, ambient temp in the room is around 73F. Not doing anything network intensive, in fact, just browsing the web a bit. Any ideas whats going on?