The original report of this bug is very similar to bug 87641, which contains extra debug information. In my opinion, this bug could be marked as duplicate of bug 87641.
-- debconf error on upgrade install [feisty] https://launchpad.net/bugs/85800 -- kubuntu-bugs mailing list kubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/kubuntu-bugs
