Distorted screen pattern - a video card problem?

unpleasant patterns started appearing on my screen yesterday and has got worse. here is a picture. does anyone have any ideas? i am assuming video card issues. but i really need some help!
http://flickr.com/photos/93443832@N00/932593412/
Message was edited by: fontlover

The first thing to try is to reseat the card and make sure all of the connections are tight. Cards can work themselves loose and connections can be bumped so that all the pins aren't properly connected. Which video card is it?

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