I'm having some sleep issues with this motherboard. Even in Lion and Mountain Lion. When I go to Sleep everything works fine. But when I get back from sleep the USB Keyboard and Mouse Lags a little (not apple keyboard tried with both). The real issue is with the USB power. When I plug a pendrive it goes OK. But the first time I plug an USB HDD the drive doesn't work and the whole system hangs If I try to open Finder. But if I plug the HDD wait a little remove and plug back in everything works just fine and the other HDDs plugs also. Any News about that? What about the Intel HD 2500? I would like to use the mirror and hardware encoder just that. I'm using an Sapphire 6870 with Duckweed as frame buffer. Works like a charm. Games and everything.