Quicktime is f*cked up

[ohbeardedone]

Whenever i wanna watch a quicktime movie, the frames jump, and they blink constantly. Its like the movie has tiny then real big lines cross or flash on the screen every half second throuhout the movie. It sux so much, what the hell is the matter with this thing?

[Plaster]

Is it happening with just one or with all .mov files?