I upgraded to Mountain Lion last week and since then my PD7 has been acting weird. I've got Windows 7 running in PD and have used it without issues for close to a year. Since the Mountain Lion upgrade when I run any Windows App in Coherence and hover the mouse over the window the mouse blinks constantly (like a strobe light) between the mac mouse cursor and the windows mouse cursor. Also, when I try typing into any windows app i get the mac error noise constantly while I'm typing. Seems to occur every 3 or 4 key presses. The text types fine into the app, but I continue to get the error noises as I'm typing. Also, if I have a coherence window open on a virtual desktop my mac keyboard shortcuts seem to get cut off. For example if I het Cmd+Space to bring up spotlight it disappears as fast as it shows up, making it unusable. My not so expert opinion is that it seems like PD is fighting with the Mac for keyboard/mouse control when its running in coherence mode since the upgrade.