from what i understand, V8 is faster then the FF3.0 JS engine. but benchmarks done with the spidermonkey engine that will be introduced in FF3.1 beats V8. question is how much V8 have improved before mozilla gets around to releasing FF3.1... btw, firefox uses a lot of javascript internally to power the gui, right? so potentially, a faster javascript engine would result in a faster firefox gui, not just faster rendering of ajax content?