Odd title though for this post, for where is the "everyone"? The link shows comparisons to previous versions of Firefox, not other browsers.
One thing I hope they fix before final release though is the constant CPU usage when you have many tabs open. I thought the Panorama feature was supposed to address this. It's currently idling at around 25% CPU for me, and no, unfortunately I can't blame it on Flash. :-\
Sunspider’s not a very good benchmark; more interesting to me is that they’re nearly even with V8 in V8’s own benchmark.
Though I wonder why they can’t backport TM, or at least a subset, to 3.6; is Firefox so monolithic that improvements to the scripthost can’t be separated from the rest of the browser?
Gotta love browser competition!
I sometimes notice this too, but always after running a bunch of Flash vids. Haven't methodically tested it, since it's not a priority and a quick restart fixes it. But how do you know it's not Flash?