nm-applet does not work anymore Lucid

Hello I just installed successfully Trinity over Kubuntu 10.04 on an IBM Laptop. Now I have a problem with the networkmananger. When I want to connect to wireless net with WPA2 enterprise it cannot connect, it is a special type of connection type called eudoroam and networkmananger always had problems, while nm-applet had not. (WPE is not a problem) In jaunty I could use nm-applet, but when I try to execute is here in Lucid I obtain An instance of nm-applet is already running. But there is not. Thanks Uwe Brauer