I can confirm this bug after a fresh Kubuntu Feisty beta install. Although I saw the security error mentioned above when starting KNetworkManager from the console, fixing the permissions in the security policy files didn't help.
KNetworkManager works when it is started as root with kdesu. -- knetworkmanager "no network device found" if wired connection plugged in before starting https://launchpad.net/bugs/50770 -- kubuntu-bugs mailing list kubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/kubuntu-bugs
