Screen "Shaking"

Holla,

recently i've been having a problem with my Fox browser "shaking" occasionally. Anyone here ever heard of this and know how to fix it. The actual computer screen is fine, the title bars stay still, but all the things in the main page move up and down in a slow hypnotic way, even when scrolling. It may also be happening in IE, i can't remember right now, i use it far less frequently. Any help would be greatly appreciated.

EDIT

THANKX ENGLISHMEN, I'M PRETTY SURE ITS THE SECOND ONE, I GOT THE FIX FROM THE SITE AND I'LL CHECK THE STATUS TONITE WHEN I GET HOME,

CHEERS MATE

Like this or completely different?

Edit: Also try this this. If it is happening in both browsers it more then likely something on your pc, maybe spyware(Ahhhh spyware)? then again it may not who knows?