Separate names with a comma.
One issue though with this workaround is that Cmd+Tab doesn't work anymore, something I use a lot. Also I use ctrl+alt for getting to the dock...
I'd rather have it as an explicit option though - hacks like this are easy to forget and when a new Mac enters the building you start...
Sorry.. Missed that. Thanks for pointing it out. Works out fine now..
I'm having this same issue and kinda regret upgrading to version 7. Using fullscreen on Lion with 2 monitors, gives me the gray Lion backdrop on...