I think I saw how to fix this problem on an episode of Xplay. If you take the cover off your PS2 there is a little white gear to the left of the disc tray in the back. They said to start adjusting it until it starts to read all disc formats again. Here's the link [url]http://www.techtv.com/xplay/features/story/0,24330,3516150,00.html[/url]