Screen Flashing on certain sites (flash problem???)

on a few certain site, like facebook, twitter, classic yahoo mail the screen erratically flashes

i keep my PC switched on for days on end, i'm also logged onto these sites, but sometimes i get the screen flashing, nothing i can do to stop it unless i restart my PC and it's fine until it starts again, it can be a day, to a few days

i think it may be facebook, as when i'm not on this site, it seems to be fine.

do you think it's a flash problem or something else

i've just uninstalled flash & reinstalled to see if it's going to help


but any other ideas?

cheers


on Win 7 pro

I have had this problem as well, and I just installed the latest Flash upgrade prior to this happening. So its probably to do with that.

This happened about 2 days ago, it hasn't happened since. Will keep you posted.