Firefox Seizures

Okay.. this is starting to piss me off. Randomly, my firefox screen goes beserk and won't stop shaking up and down. It stopped for a week.. only to come back and piss me off anymore.
It will usually stop when I go to the firefox website.. but will start when i exit. Anyone have any ideas why?

 

Have you got the latest version?
Tried googeling?

Can't say this has happened to me, so can't help you much more... will do a quick google though...

 

bleh double post

3rd google link resulted in this:

Hope this works

 

Thanks. I found a bit of info on google, but no solutions thus far.