Comment 52 for bug 262451

I had lots of package updates reported as pending based on

$ sudo dpkg --audit

but there is no need to purge all of them (at least it wasn't for me). The work-around was simply to reinstall gxine, as suggested e.g. in
https://bugs.launchpad.net/ubuntu/+source/dpkg/+bug/262451/comments/40.

The error message was gone afterwards, and I have installed 91 updates since.