I've checked this with the live cd (feisty desktop herd-5), and found that if I switch the default depth in xorg.conf to 16 the problem disappears.
-- compiz only refreshes part of desktop/root window width, leaves ghosts in remaining area https://launchpad.net/bugs/89222 -- ubuntu-bugs mailing list [email protected] https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
