Greetings,
This annoys me: whenever I start Windows XP as VBox guest and I switch back to host OS (Win7 x64), I have silently pressed the Win(Start) key on keyboard, so that when I press E, explorer starts, when I press L, desktop even locks etc. The Win key is deactivated after pressing Win key twice. I would appreciate if this annoyance would be removed. I didnot test if the bug occures with other guest OSes.