I'm starting to see this on the upper righthand side of the screen. I took the front glass off to see if something had gotten underneath but it's clean.
Any ideas?
Are you referring to the stuff on the bezel or the mark on the screen itself. My 27" iMac has something very similar to what is on your screen. It appears when the display is cold and disappears shortly after startup.
thanks for the reply LC and I don't believe anyone one has. I took the glass off with some suction cups and cleaned both sides with a dry cloth that is for lcd screens and it's still there. I guess I will try cleaning the lcd panel next. I was just kinda hesitant to mess with the panel itself.