I can confirm this either. This behavior affects on all of my Ubuntu Oneiric pc's. (64 and 32 bit versions). Two with an Nvidia card and an other with an on board - none Nvidia - card. I think that this is maybe an Compiz Expo bug. When i switch between my different desktops i get large orange rectangle that covers half of the screen.
I can confirm this either. This behavior affects on all of my Ubuntu Oneiric pc's. (64 and 32 bit versions). Two with an Nvidia card and an other with an on board - none Nvidia - card. I think that this is maybe an Compiz Expo bug. When i switch between my different desktops i get large orange rectangle that covers half of the screen.