[StillBored]

  As soon as firefox gets per process tabs in stable I'll switch back

As strange as it sounds, this is a reason why I don't use chrome as my "default" browser. I seem to find the web sites that leak resources and leave them open in tabs (one of my projects at work is a big culprit too). With firefox a runaway tab or two simply results in a single CPU pegged at 100% and max about 2GB of ram consumption. With chrome it will peg out a couple CPU's and eat RAM until my machine goes into swap. Usually this happens while I'm gone so simply unlocking the screen is a painful process as everything gets swapped in.

In other words I prefer having to kill firefox on a regular basis because its run out of RAM, than to have to reset my machine because its taking 10 minutes to unlock the screen.

[sp332]

The default for Firefox will be to have only 2 processes, one for chrome and one for the tab content. So it won't have that disadvantage.