As we found out during a session on the Danish forum, the following command resolves the problem for users who encounter it:
sudo rm /var/lib/apt/lists/* && sudo apt-get update && sudo dpkg --configure -a && sudo apt-get autoremove && sudo apt-get update && sudo apt-get upgrade you get a notice that ''/var/lib/apt/lists/partial' cannot be deleted which can be safely ignored. -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/476135 Title: apt becomes wedged, requiring shell script intervention, after using free cafe wifi connection -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs