I'm running Ubuntu 13.04 and am trying to update.
When I attempt to do it through the Software Updater the program crashes before I even have the opportunity to put in a password to authenticate.
When I enter
sudo apt-get update in a terminal the update process starts, but quickly I start seeing error messages such as these:
Err http://packages.medibuntu.org raring Release.gpg Something wicked happened resolving 'packages.medibuntu.org:http' (-11 - System error) W: GPG error: http://ppa.launchpad.net raring Release: The following signatures were invalid: BADSIG 4A272F2B298C62A6 Launchpad PPA for ffmulticonverter packagers
Anyone got any ideas? I can provide more system info if needed.