I can confirm this problem, but it occurs at random. When I use sudo in a console and immediately try to open Adept, it sometimes refuses to show the kdesu dialog.
-- kdesu fails when invoked immediately after sudo from terminal https://launchpad.net/bugs/72545 -- kubuntu-bugs mailing list kubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/kubuntu-bugs