I just got my u2311h monitor for my mac pro yesterday and so far I'm having some issues with it. The screen appears to be "grainy" and the text is fuzzy and hard to read. The screen also flickers a bit and its giving me headaches. I've tried using different cables, but that didn't fix it. Also, for some reason I'm having troubles waking the computer from sleep since I started using the monitor. Since quite a few people here are using the u2311h, do any of you have/had the same problems and is there anything I can do to fix it? Or should I request a refund/replacement? Thanks for your help!