Hi guys Two weeks ago I bought a used Cinema Display. I've been pretty happy with it so far but today as I was about to watch a movie I spotted an eyesore of epic proportions. I noticed in the bottom right of the display as I was watching it from an angle. Now before I go screaming at the guy I bought the display from I thought I'd run it by you guys. The line you see on the picture doesn't really move if I gently touch the display; it seems to be something underneath the glass. Here's what I've tried: Using the display with a new MacBook Air 11.6" Using the display with a new MacBook Pro Retina 15" Using all available resolutions I've gently transported the display from seller's house to my own where I installed the display. I've barely touched it since and never in a way that could cause something like this. What do you think is going on here? And what could have caused it? Thanks.