I am running a Win7 VM in full-screen mode on a second (external) monitor from my MacBook Pro. It's never given me trouble before, but after the 9.0.23350 update, the Win7 screen will suddenly drop to a lovely solid dark grey. If I "Exit Full Screen," everything is still running and working just fine, and I get video back. I can then return to full screen mode, at least for a bit, but the grey screen will return very soon. I can also use Mission Control to drag the fullscreen VM to the built-in screen, and then back to the external, to restore video. This is on Mavericks, with "Displays have separate Spaces" enabled in Mission Control. Any ideas?