I'm having an issue with my 2009 MBP where the fans start going crazy anytime i watch flash videos. I just did a clean reinstall of 10.6.7, running the latest flash and Firefox 4. It seems Firefox 4 also uses more ram compared to 10.6.6. Its currently using over 400mb compared to less than 200mb on 10.6.6. Anybody else having similar issues?