Alright I'm running my media center PC through a DVI to HDMI cable to my plasma screen. Upon booting the computer the image looks crisp and fantastic. After a few hours you can notice several bars of discoloration going down the screen. After a day of being left on the color is streaked so bad that blacks look like browns and grays. Restart the computer and all is well with the world again. Could this be a bad cable? Video Card over heating? Some kind of interference from another cable behind my media center? I'm looking for any ideas guys and I've come up with next to nothing on google so far. Thanks.