I observed a similar problem when I sticked two removable media (a usb hdd and a usb-stick) into the usb ports. Ubuntu overlapped them in a very ugly way.
-- Desktop icons are allowed to overlap horribly https://launchpad.net/bugs/40872 -- desktop-bugs mailing list desktop-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/desktop-bugs