I´ve had chance to look a bit more at this problem and it appears it isn´t confined to Update-manager. It effects any program with a progress bar. Instead of an orange bar moving across any text in the area is just converted from black to white as it moves across. It only effects my i810 based machine. I´ve tried both the i810 and vesa drivers and they give the same results.
-- No progress bar in Update Manager https://launchpad.net/bugs/92392 -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs