Yeah, I've gotta say I'm within a hair of dumping Firefox. I'm not a Chrome fan, and IE is just not on. I've tried some other open source browsers and they have the usability of a jello hammer.
At this point I'd be willing to pay money for a browser that just didn't flatline my CPU every time I loaded a page, that didn't stall for tens of seconds at random intervals (this is after I turned off hardware acceleration, which make things tens times worse on Windows in 38) and is simply, utterly and completely unusable on Amazon.
Why these basic usability metrics aren't the first priority for Firefox developers is beyond me. The changelog seems full of completely irrelevant stuff that's just going to bloat things more.
Dunno... maybe it's time to hold my nose and move to Chrome, but Firefox has so many features I like and know well that I'm loathe to do so. It feels churlish complaining about software I don't pay for, but I'm not sure why Firefox is being shipped any more. It certainly isn't to satisfy user needs, because it doesn't.