Since I have no clue what is going on at this point, I'm not going to say for sure it is this latest update, but Firefox has been running really poorly the last few days. There's lag in just about everything (scrolling, video playback, clicking links, page loading, etc), and overall its just really annoying. Everything was working smoothly before and there's no background processes that I can see. Even just typing this, my text input will hang. Video playback has been stuttery. Yesterday Hulu basically crashed (at one point it said something about Flash running a script that would cause it to run poorly and basically locked up Firefox). Chrome doesn't seem to be impacted from what I can tell. There was also a Java update, as well, so maybe its to blame. Annoying to say the least though, and when combined with the double clicking of my mouse (Logitech wireless laser mouse that I've seen people say they've had as well), my computer is kinda pissing me off lately.