Comment 1 for bug 318301

Thanks for the bug report.
Did you use v1.2.0 or v1.1.9 from the PPA?: https://launchpad.net/~zohn-joidberg/+archive

Anyway, I think I already located the error. I removed the config file backup from the install process here: http://bazaar.launchpad.net/~zohn-joidberg/webcontentcontrol/main/annotate/head%3A/scripts/install.sh
This is because I started working on fixing the upgrade process when using the PPA.

The networking issue is most likely caused by FireHol.

To be able to remove the package, just run the following command:
/usr/share/webcontentcontrol/scripts/export_all.sh "/usr/share/webcontentcontrol/backup"

This will create /usr/share/webcontentcontrol/backup.dgs.full and then the package removal should work.

However, since the initial configuration files haven't been backed up, you will still experience networking problems and filtering.

To fix this remove firehol, tinyproxy and dansguardian:
sudo apt-get remove --purge firehol tinyproxy dansguardian
or
sudo apt-get remove firehol tinyproxy dansguardian
if you want to keep the configuration files.

I will release a fix as soon as possible.