/usr/share/doc/ubuntuone-client-dbg/changelog.Debian.gz is in ubuntuone-client-dbg 3.0.2-0ubuntu2.2.
This file is owned by root:root, with mode 0o777.
It is a symlink to /usr/share/doc/ubuntuone-client-dbg/../libsyncdaemon-1.0-1/changelog.Debian.gz