How did stability improve in Firefox 3.6?
We hate crashes. When Firefox crashes, we try to get you back on your feet as quickly as possible, but we’d much rather you not crash in the first place. In Firefox 3.6, we are changing the way that some third party software hooks into Firefox which should eliminate a good chunk of those crashes without sacrificing our extensibility in any way. In the process, we’ll also be giving you greater control over the code that runs in your browser. Now Firefox can better handle all of the rich Web applications you have running simultaneously.