VirtualBox and Seamless Mode

view story

http://forums.fedoraforum.org – I've installed VirtualBox in Fedora 12 Alpha, then I've installed Arch in VirtualBox. Next I've installed the Guest Additions which now enables me to run in seamless mode. What I don't understand, and hoping someone has the answer for, is that in seamless mode I would have assumed that I would see the Arch (or any other guest OS) desktop and icons. In fact I don't. I see the Fedora desktop and icons. Is this the way things are supposed to work with VirtualBox? (HowTos)