On my MacBook Pro, I have four desktops set up under Mission Control. The PD7 Virtual Machine list window is bound to desktop #2. My VM is running Windows 7 Ultimate in coherence mode. When I switch away from desktop #2 and then, switch back to desktop #2 via Mission Control, the Parallels Desktop icon in the dock changes from the Windows logo that shows the Windows Start menu when clicked to the standard Parallels Deskop icon which does not show the Windows Start menu. To recover and bring back the Windows logo dock icon, I must click on the VM entry inside the PD7 Virtual Machine list window.