Well, I should have paid more attention. I have been deleting all those posts about loose screen wires and displays that act up. My iBook is losing one of the colors, I think maybe blue, since the screen gets a green tint over everything. I have a 1 GHz G4 about a year and a half old. Just over the last 4 or 5 days the screen has been doing this when I open it up from closed and sleeping and it goes to normal with a light tap or shake. Vibration or moving can cause it too and sometimes it will get some lines that come and go rapidly across the screen with vibration of typing or clicking the track pad. I do have AppleCare. What's the fix? Eric Richardson