Hello, I have a headless 2011 Mac Mini, i have noticed that when screen sharing with either, Apple Remote Desktop, Logmein, or another VNC app on my iPad i get a screen with black elements\bars. Moving windows around will get rid of the blocks, but it's very annoying. I am wondering if there is something wrong with the mini and if i should return it, as i bought it last week. Both my rMBP and 2011 Mac mini are running 10.8 Here's an attachement of an image i found on the internet showing the same issues as me. Thanks.