I can also confirm with a non-laptop PC and an ATI Radeon VE. Only happens with the new default theme and on buttons. Running Dapper with all of the updates (including the recent xorg updates).
-- Artifacts on application buttons https://launchpad.net/bugs/47638 -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
