I can't confirm the issue, but after looking at kubuntu-default- settings.postrm, the last line under *) does say Unknow. Next upload for k-d-s should fix this. ** Changed in: kubuntu-default-settings (Ubuntu) Importance: Undecided => Low Status: Unconfirmed => Confirmed -- Unknow argument for postrm https://launchpad.net/bugs/92794