hello everyone, I received my hd5870 today and so far, it is working like a charm (very quiet compared to my previous card). however theres one thing I noticed: Ive connected one 23" ACD via DVI and one 23" ACD via Minidisplay-to-DVI-Adapter (the small one, not the active dual-link one). The display connected to the MDP via adapter doesnt work. Neither does OSX recognize the monitor nor does the monitor recognize to be connected. Could this be related to the adapter? Do I need a dual-link adapter?