I have an ibook G4 12". I left my computer with the screen off and the screen savor on for about 30 minutes. I came back, turned my brightness back up and my screen was messed up. It had a greyish, and fuzzy fade to it, and i could barely see. I shut down my computer and booted it back up and it was back to normal. I have dropped my ibook before but that was about a month ago. Is this problem serious? Will it happen again? Any help would be much appreciated.