Comment 2 for bug 299303

Thanks for your report.

The root cause of the failure is
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Setting up ttf-liberation (1.04~beta2-2) ...
E: /var/lib/defoma/locked exists.
E: Another defoma process seems running, or you aren't root.
E: If you are root and defoma process isn't running undoubtedly,
E: it is possible that defoma might have aborted.
E: Please run defoma-reconfigure -f to fix its broken status.
dpkg: error processing ttf-liberation (--configure):
 subprocess post-installation script returned error exit status 1
=====

could you please run
sudo defoma-reconfigure -f

and tell if this helps.