Just got my macbook today...it's sweeeeet however I have some concerns. When I was checking out the screen savers, it crashed while the arabesque screen saver was running, then it made me re-boot. When I shut the computer off, I noticed this yellowish hue directly in the middle of the screen when the computer was off! You can only see it in certain lighting, and you can't see it when the computer is on, but it seems like it happened right after my macbook crashed. Is it possible that something got permenetly burned into my screen?