I had the same problem too, but without any activated interfaces. I worked around the problem by first manually configuring the relevant interface with some arbitrary address, thus:
ifconfig eth1 1.2.3.4 -- [Dapper] Application Crash when trying to configure network interface thats not enabled https://launchpad.net/malone/bugs/30775 -- kubuntu-bugs mailing list [email protected] https://lists.ubuntu.com/mailman/listinfo/kubuntu-bugs
