Hi Logos,
It probably is "his mission" you know, tell him Fx is doomed and he will feel better
Now seriously, Fx has a lot of recap to perform after the GoogleChrome tabbed separate processes experience and the additional securtity gained through that (browser is hard to hack). I would not be sure that if NS comes in flock beta, a GoogleChrome clone) if I won't switch, but at the other hand I would also miss the other security extensions. By the way the persona's that come now in Fx won't they add somewhat to the vulnerability window, because the browser can be identified uniquely in some way?
polonus