It looks like your /var/lib/dpkg/available is corrupted. Run "sudo dpkg --clear-avail" and it should fix your problem.
** Changed in: dpkg (Ubuntu) Status: New => Invalid -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/875516 Title: package debianutils 3.4.3ubuntu1 failed to install/upgrade: ErrorMessage: package debianutils is already installed and configured To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/dpkg/+bug/875516/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs