If I've had the Flash plugin crash 10 times in 10 years I would be surprised - when I say this, I don't mean "you're wrong / something you're doing is wrong", necessarily, but my wife's machine had a problem with Flash (painting issues, graphical corruptions in animation, crashing), which were fixed by downgrading Flash on her machine. Not an ideal solution, but a damn sight better than browsers crashing left, right and centre. Combine that with the Flashblock add-on for Firefox so you just enable Flash clips when you want them, and that should make things a bit more manageable. Her problem was with Firefox on Vista 64 and Flash. Keeping the latest FF version but downgrading Flash to 11.2 (IIRC) fixed it.