Comment 5 for bug 775480

Irony and prose aside, I didn't feel like digging up all possible factors, and I've never packaged dpkg myself, so I'm unaware of both Ubuntu and Debian policies as well as the dpkg common practice WRT config file removals. Possibly some postinst script used to create /etc/init/kdm.conf unbeknownst to dpkg's, once upon a time.

Anyways, if the fix is removing duplicate non-idempotent functionality, fine.