Hey guys. I bought a used iMac about a month ago. It's the 2008, 2.8Ghz model. I hadn't used it too heavily until about the last week or so, but am now noticing when there is a dark image on the screen, which appears to be some sort of yellowish tinge, or light leak in the bottom corners, and maybe slightly at the top. Just wondering if this is normal, though I don't see how it would be. and if anyone else has had this problem, and what they have done about it. Thanks for the help!