Installed it, used it for 5 mins, uninstalled it, went back to 2.0.0.14. Can't run Greasemonkey, so none of my scripts work, it won't run Noscript, so I lose that protection, it "found" an old set of bookmarks from about 6 months ago, I could go on... I'll wait for the final release and then a bit longer, till all my addons are fixed.