How smooth is Firefox 4 on your Nook color? I noticed that Opera 11 on my N810 (unbelievable, a CSS (closed source software) company supporting my open tablet more than a would-be OSS one), utilizes GPU acceleration -- or at least I think it does due to the strangeness of some rendering glitches I've noticed. It's impressively smooth (though still a ways away from buttery). I bet that Opera 11 would be extremely smooth on the Nook Color.