Thanks for your report. This is not a bug, as you are trying to use two package managers at once. Check to see if you have synaptic open while you are trying to use apt-get or update-manager, or some similar situation.
Bug 74134 covers making this error more user friendly. ** Changed in: ubuntu Status: New => Invalid -- Unable to lock the administration directory (/var/lib/dpkg/), is another process using it? https://bugs.launchpad.net/bugs/339442 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