I usually run windows xp full screen in one of the open spaces. When I am in a Mac space and ctrl-arrow to the windows space the open space grid (showing the 6 spaces I have set up) remains on top of the windows screen. It is not functional. The only way I can get rid of it is to ctrl-alt, which brings up the Parallels menu bar and wait a few seconds. The grid will then disappear. I can then left mouse click on the windows screen and work normally in windows. This started with Parallels 6. The grid worked normally with Parallels 5. Is there a fix for this?