So when does Mozilla get around to ripping Firefox wide open on an operating table and not letting the surgeons leave until each tab has it's own process?
Not switching back until I see a modern process architecture. Screw one tab being able to affect the responsiveness and stability of another or even worse... The browser's chrome. shudder
That said, from a security perspective, they enable some clear benefits, so I am all for it - it's just not a cure-all for responsiveness issues.
There is a lot (and by that I mean a lot - like, really basic stuff like focus) that doesn't work still, but the core of a multi-process Firefox is standing up already.
I'm guessing Electrolysis will get some more loving once the panic of shipping Firefox 4 has abated.
P.S. Other browsers, supported by commercial entities, can be excused for doing this. Not Firefox.