Confirmed. Adding Option "RenderAccel" "off" fixed this issue on a Mobility 7500 with driver 'radeon'
-- Cairo and ATI RENDER extension cause scrambled buttons in UbuntuLooks https://launchpad.net/bugs/34435 -- desktop-bugs mailing list desktop-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/desktop-bugs
