The SMC is in charge of controlling all the supply functions of the machine. Apple now offers an
update of the SMC’s internal program aimed to refine the behavior of the MacBook Pro’s ventilator when it is put to a severe test. This update should delight all users with a MacBook Pro that turns into a professional hair dryer as soon as they work on photos or videos, or even when they read a simple animation or video in flash in their web browser...
This update therefore only concerns the MacBook Pros equipped with the NVidia 8600M GT card, the one which has been creating problems since last summer.