Thanks for your bugreport. This looks like you /var/lib/dpkg/status file got corrupted (around line 20544) - this usually indicates either filesystem corruption, memory issues or bad third party packages.
As a workaround, you may try to repair it manually, but make sure to keep a backup. ** Changed in: update-manager (Ubuntu) Status: New => Incomplete -- update and package manager crash https://bugs.launchpad.net/bugs/226008 You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs