I have a MacBook Pro with an external monitor connected via the mini displayport output. I normally have my Windows 7 guest full-screened on the MacBook Pro's internal monitor, and use OS X apps on the external monitor. I have the OS X menubar displayed on the secondary monitor.
I use the "Login Window" option from the fast user switching menu on the OS X MenuBar to lock my Mac when away from my desk. I use this as I found a 3rd party app that could assign a keybaord shortcut to it (BetterTouchTool). I'm amazed how difficult OS X makes it to lock your Mac with a keyboard shortcut, but that's another story.
Anyhow, what happens now is that after I log in after locking the Mac, my Windows guest appears full-screened on the external monitor. It jumps from the internal monitor to the external one without asking me :-)
This did not happen in the previous version - I assume the fullscreen enhancements in 4.1 are casuing this behaviour.
Note this doesn't happen if I use the "Lock Screen" menu option via the Keychain app - but I can't find a way to assign a keybaord shortcut to that.
Not a massive issue, and so far I'm enjoying 4.1 which seems to be working well.
Update: found a workaound. Assign keyboard shortcut to "Sleep Display" predefined action in BetterTouchTool. This blanks displays and locks screen as long as you have "require password after sleep or screensaver begins" enable in Security preferences. And Fusion does not jump to external monitor after logging in :-)
Message was edited by: wurz