tdenetworkmanager can connect to some wifi networks, but not to all (Enterprise)

hi Running Trinity 14.X on Kubuntu 14.04 I face the following problem with tdenetworkmanager: - I can connect to private wifi networks, - when I try to connect to enterprise type of network (eduroam, a sort of universal network setting for universities in europe), which requires a bit more complicated authentication I obtain the following error - Insufficient permissions - network manager not working - DBUS failure That is sort of bizarre, since I could connect to these networks using the trinity 3.5.X series on 10.04. Anybody has an idea? thanks Uwe Brauer