Comment 5 for bug 534154

Thanks for your report. I think I've found the cause of the problem.

Could you install the following package, test it and report if that fixes the bug for you? Note it will take some time before the link below works (about 7 hours).
https://launchpad.net/~nalimilan/+archive/ppa/+files/system-tools-backends_2.9.2-0ubuntu2+ppa0gerror_amd64.deb