I'm just going to piggyback on this thread (mods: could you change the title to TenFourFox?) since it's stickied already.

TenFourFox 9 is out as well as the QTE. Besides JavaScript regex compilation, it also includes (secretly) the new JavaScript methodjit compiler. Testing really needed! Methodjit is not enabled by default to prevent the clueless from hurting themselves and others. Read the blog entry:

http://tenfourfox.blogspot.com/2011/12/90-rc-available-with-secret-sauce.html