Absolute idiot me went a year without cleaning my G5's LCD screen. When I did, using a damp microcloth, I was left with bad streaks. ;( This isn't the best pix, but:http://i145.photobucket.com/albums/r237/marka2/DSC05957.jpg
I can't get the streaks off now. I tried a damp cloth and Monster iClean, and neither worked. (The more central streak drives me nuts when working in Photoshop; the others I don't care about as much.)
I also tried using Apple's chat support, and got nowhere ... except ended up with a stuck red pixel in a good part of the screen. (He had me do a bunch of resets on things like RVRAM and PRAM, which I thought was daffy, but he wanted me to do them ... and kaboom ... suddenly, I had a stuck pixel. :angry)
I'll probably end up dealing with the last resort: an "Apple Genius" (:rolleyes) in the flesh. But I figured before that likely fiasco I'd ask if anybody here has had a similar problem and found a solution.
I'm really hoping I haven't ruined my screen.