i purchased my base 15'' MBP around a month ago. everything was pretty good until around a week ago. I installed a couple of plugins for firefox, and things have been pretty laggy recently. Browsing site like ESPN have become choppy and even scrolling around the iTunes store has been laggy. I uninstalled Firefox and it's still still laggy with Chrome and Safari. Is there any way I can manually uninstall plugins? I feel like this might have something to do with Flash...How can I fix this? thanks!