When I minimize a running Windows OS Guest I can't maximize it again. For Example: Windows XP SP3 running in "Window" view mode. I minimize to the Mac Dock by clicking on the yellow minimize button. When I click on the minimized icon in the Dock it brings the Parallels Toolbar to the front but not the Guest. To bring it back I have to select another view option generally "Full Screen" then Cancel when the pop-up dialog is displayed. I'm running 10.6.1 with the latest build of Parallels.