The only problem I"ve found with Firefox, is with sub standard extensions. For example, adding Fire Gestures, makes all flash video lock up every 20-25 seconds for a half second, at least on my machine. Adding FireBug, makes everything bloat more, because fb holds 2 copies of the web page in memory, plus all the injection codes. Hell with FB, i've seen one tab bloat to like 500+MB. Now turning off this extension, and i can have 20 tabs open for DAYS and memory stays around 60MB. And this is the problem with ANY web browser that supports user based extensions. The fact that FF has thousands of more extensions than Chrome, amplifies this. This viewpoint is like people moving to macs because they don't have viri.