Allright, I have a 24" iMac. 3.06 Core Duo 2 4GB RAM etc etc. Just now, as I was innocently talking to a friend using iChat, the top of my screen flickered once or twice and then went dark. I am typing on it now, so it is not unreadable, it just looks like the back lighting has gone off on the top half. The middle is relatively light (bleedover from bottom back light?). I have tried playing with the hinge to no avail. After I reset the computer, cleared pram-nothing. Zippo. I got the top to stay lit for about a half second after reset, but it then flicked off again. Do I need to load up my iMac and drag my ass to the Apple Store (it really is quite a task to drive there)? Here is a horrible cell phone picture (and no, the screen IS dark, that's not a shadow.): Thanks for your thoughts! EDIT: After display sleep, screen is 100% bright. Immediately snaps back to half and half.