This is my kids' computer and it is now glitching pretty heavily with graphics-intensive software. I paid $750 for it used and, of course, I don't have AppleCare. In your opinion, is it worth it to: 1) Get Apple to fix it? 2) Try to repair it myself? I used to build my own machines so I know my way around a computer, but the iMac seems like an altogether different, more difficult, beast to repair. Anyone think that there is any chance that Apple will just fix it free? I saw that there was a 27" iMac recall for the graphics cards, but not on the 21.5". Do they ever do this for people who are swimming in Apple gear (i.e., good customers)? Thanks for the advice.