I also think this is somewhat Cairo related. After trying the XGL server (using unofficial dapper packages from xgl.compiz.info) I can not see the grabled problems anymore... I've went back to normal XORG and now this bug seems to be gone.
Installing XGL packages upgraded libcairo2 to version 1.2.0 so my guess is that helped.... -- Garbled using open source Radeon driver https://launchpad.net/bugs/38198 -- desktop-bugs mailing list desktop-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/desktop-bugs
