I have noticed since I upgraded to 10.7.4 that when my monitor goes to sleep I cannot connect via Teamviewer. It authenticates but then it just sits there, the only way I can connect is if I vnc in from my phone first so the screen is on (no the mini is not going to sleep just the monitor) and as soon as that turns on the screen bam, teamviewer works. I have sent in a support request and I have tried both V 7 and V 6 of TV. Any tips that you guys have found?