Start 'compiz --replace' and 'gtk-window-decorator --replace' from two different terminals. Then try to reproduce the crash (e.g. by right clicking a few times on the windows bars) and attach the output in two separated files here.
-- window decorator crashes https://launchpad.net/bugs/72207 -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs