Somehow your perl installation has been broken, but there's no dpkg bug here. I could reassign to perl but it's probably already fixed by now if there was a problem. So closing the report instead.
** 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/318209 Title: package ntpdate 1:4.2.4p4+dfsg-6ubuntu2.2 failed to install/upgrade: package ntpdate is already installed and configured -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs