Ben, your problem is bug 346386 I'm closing this report because the original issue is a user error in /etc/apt/sources.list and not a problem with update-manager.
Don't hesitate to submit any new bug. ** Changed in: update-manager (Ubuntu) Status: New => Invalid -- You received this bug notification because you are a member of Ubuntu Bugs, which is a direct subscriber. https://bugs.launchpad.net/bugs/661989 Title: Could not initialize the package information An unresolvable problem occurred while initializing the package information. Please report this bug against the 'update-manager' package and include the following error message: 'E:Type 'sudo' is not known on line 43 in source list /etc/apt/sources.list, E:The list of sources could not be read.' -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs