Comment 7 for bug 89652

Could you look at the top entry from /usr/share/doc/libxfixes3/changelog.Debian.gz and note it to a comment? The libxfixes3 1:4.0-0ubuntu1 version has not been uploaded to Ubuntu, maybe you used some extra apt source for compiz or something? Then to fix the bug you can run "sudo apt-get install libxfixes3/dapper" which will reinstall the official dapper version