Question for MacBook Pro owners, specifically, 2.2ghz model. Each time I plug-in the magsafe adapter to charge the battery, the fan turns on after a few minutes. Is this the case for you guys too? I find it a bit disappointing as the MacBook is not hot at all... (even when the Mac is idle). Very quiet machine otherwise. Pretty happy with it. (btw running Leopard 10.5.1)