I currently have a dual booted system running Arch 64 with GNOME 3 as well as Windows 7 64. Recently after updating to GNOME 3.2 from 3.0 the system would clash whenever the monitors (2) turned off but the system is still running.
I've had endless trouble with video drivers on arch due to the double head display and using Nvidia drivers (random hard freezing when using graphically intensive applications like flash) but what really confuses me is that the problem with resume seems to have spread to Windows 7. I cant be certain that the update caused either but there seems to be a correlation.