Did a search on the forum here, but couldn't find anyone having the same problems I am having. When I download files from my cameras, usb or firewire card readers to my G5, I occasionally get photos pixellated and distorted. Lately the problem has got a lot worse. To the point where I can't use the G5 to make any photo adjustments. Sometimes the photo will download correctly, and when I hover over a file in the finder, the small version/icon appears that the photo is ok, however, when I open it up in any photo program (CS3, iphoto, Aperture, etc) the photos come out pixellated. Sometimes is it very subtle and others is drastic. I've tried connecting the cameras/reader to different port on the front and rear, same issues arise. At this point I'm thinking it has something to do with my video card, but I have no idea where to start to trouble shoot it. My G5 is a dual 1.8, with 8gb Ram.