Nope, not yet at least. I don't honestly find FF "fat" and requiring slimming/speeding up. Of course, faster JS is a good thing, maybe I'll switch when some app more or less needs the performance to be usable.
It's also too obsessed with tabs, which I find dumb (I already have a taskbar in my OS, thanks), and a few UI bugs are stopping me.
I'd prefer to have Flashblock/Adblock Plus too.
[edit] Oh, and from a tech point of view separate "process" pages I find interesting, but I'm not sure that it's solving a problem I currently have.
It's also too obsessed with tabs, which I find dumb (I already have a taskbar in my OS, thanks), and a few UI bugs are stopping me.
I'd prefer to have Flashblock/Adblock Plus too.
[edit] Oh, and from a tech point of view separate "process" pages I find interesting, but I'm not sure that it's solving a problem I currently have.