After I installed the 10.6.8 update on my MBA 13" with 4GB of RAM, after booting up, the fans are spinning quite fast. On 10.6.7 wasn't the case. Tried a reboot, re-start etc... and still the same thing. It takes a while (like 3-5 mins) for the fans to go back to normal. Has anyone else noticed the same thing on their machines?