I realize this probably isn't MP specific, but I'm asking here anyways. I just set up a second monitor on a 2010 quad with the 5870. The first monitor is using a HDMI->DVI cable and the second is using a HDMI->MDP cable. Both work fine, but it seems that either turning on or off the second monitor (MDP connected) wakes the computer from sleep. This never happened with the first. I haven't tried switching the cables to see if it's a MDP issue, but have any of you experienced this? Not a real problem, just a minor annoyance I'm going to need to be aware of.