Hey there, I just received my 15" Titanium Powerbook (1ghz, 512mb) and when I move the screen back or forward, the screen goes almost white with what look like dirty spots and when I move it to another position the desktop usually reappears. Does any one know what is causing this? Maybe a loose cable? The ebay auction mentioned nothing about the screen being a little funky. I'm thinking something might have rattled loose while on its trip. Other than the white screen problem ,everything else works great and when the display is in a good position, it's perfect. Please let me know if you have any suggestions or tips for me. Thanks!!