The process that had the lock appears to be "/usr/bin/perl -w /usr/bin /debconf-communicate -fnoninteractive authtool"
Is this a remnant of a crashed authtool process? -- crash if debconf db is locked https://launchpad.net/bugs/86380 -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
