If you've been counting down the hours until the next release of Firefox hits doorsteps, you can now officially reset the clock. Firefox 3.6 has dropped its beta label and shimmied out into the wide world, boasting a slew of new add-ons and features which should make event the most selective browser enthusiast jump gingerly skyward whilst clicking one's heels. Included in the latest and greatest is support for browser thumbing via "Personas," which seem to be a response to Chrome's theme functionality (allowing users to change looks with one click), improved Javascript support, and most interestingly, improved support for HTML5 video, which further opens the window for all kinds of Flash-dashing activities. We're still not seeing nearly the perform