Every so often firefox will seem to freeze, however it hasn't actually crashed. Videos & music will continue to play, text boxes can still be interacted with, links, tool bars, the menu, etc can be interacted with,the cursor changes to its appropriate one for the needed job, and actually work(presumably), but the screen itself is frozen and doesn't change. According to the task manager it is responding and working properly, it closes normally and upon reopening it works properly and show no signs of having crashed. My assumption is that Flash is causing it(that seems to be how it happens most) however without being able to force it to happen(and 70% of my internet usage requiring it) I cant really test to make sure. Note: Firefox just update to the newest version when I was checking so I wouldn't know if that will fix it.