http://homepage.mac.com/cwright3/screen.jpg The photo in that link speaks for itself. Earlier today this light blue pattern of video artifacts started appearing on the display, and I can't figure out how to fix it! By default it won't be a very dense pattern (such as the iTunes window in the photo), but if you drag windows around on the screen, the pattern will grow more dense until you can't see that window at all (such as the window on the left side of the screen). I've checked that the graphics card (ATI x800xt) is seated firmly in the computer's AGP slot, and tried rebooting the computer several times. Then I opened up a screenshot on another computer and the pattern was goneso does that mean the display is the problem and not the computer? I was traveling with the computer last week, but had no problems with it during that week. And it's been set up and working for the past 3 days here with no problem until now, so I can't say that the trip had anything to do with this problem. Does anyone know of a solution? Thanks!