Has anyone else experienced this? I carry the iBook inside of a neoprene slip case inside my backpack while I'm at school. I've just noticed this week that the keys appear to have scratched my screen (the lines on my screen are definitely from the raised edges of the keys). 1) What can I do to stop this? 2) Is this a manufacturer defect? I feel like I'm entitled to a new screen, I've only had the iBook for about 2 months. Thanks in advance!