I experienced the same kind of trouble on Dapper Ubuntu. I have an 9200SE ATI card, known to have an issue with the official driver from ATI but the bug happened even without any material acceleration and even with the free "radeon" driver.
The strange point is that this behavior is highly randomized. Attached you will see one example in the Listen software but it is never systematic (it happened a few time with Listen). -- Wrong color in fields of Gtk apps with some themes https://launchpad.net/bugs/57417 -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
