I should have my brains checked, but I have 69 extensions active and 44 just sitting there not being used. Sometimes I will activate or deactivate an extension when I want it's functionality. Right now I have 6 tabs open and FFv1.5.0.6 is hoggin appx 237MB but using only 2-17 CPU clicks.... Yes, I find it unstable, but I still like it better than IE....I think it's because I am a tweak-nut. Oh well.