I confirm what Douglas wrote. I had the same issue and installing "policykit" resolved the issue.
-- [jaunty] kpackagekit doesn't prompt for user password https://bugs.launchpad.net/bugs/353278 You received this bug notification because you are a member of Kubuntu Bugs, which is subscribed to policykit-kde in ubuntu. -- kubuntu-bugs mailing list kubuntu-b...@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/kubuntu-bugs