Now I'm not certain if the dark corner is really caused by pressure on the panel or not. If I turn the brightness to 45 or higher, the dimness in the corner becomes much less noticeable. Does anyone else with this monitor notice that the bottom corners on their unit go dim at lower brightness settings? I'm thinking it's possible the dimness I'm seeing is due to the nature of the edge lighting system. It could be that this model is simply not designed to run at a brightness setting lower than 45 or so.