Something curious happened to my week 9 MBA. It was a virtually silent machine, no issues whatsoever that I've owned for the past week. Could barely hear the fans most of the time. Then played some WMV files and the computer seemed to overheat. The video began to stutter, the fans went to high speed. I quit everything except Safari without any video, and the fans just would not turn off, scrolling began having a delay, and the bottom of the computer felt very hot. Finally shut the computer down and restarted and now it's fine. Bottom of the computer is only warm, and it seems to play videos fine. Question: has anybody else experienced this, and is this something I should worry about?