On MBA Rev2/SSD after watching 3-4 minutes into a video, on a flat wooden desk, in the new "Watch in HD" format which is suppose to be 720p, the fans rev to 6200rpm and temp at 80C. Mind you I am still in safari and not watching YouTube's full screen mode. And recovery times for the fan to slow down even when it's back to 50C is a bit long. Is this normal behavior for a Rev2?