Version: (using KDE 4.4.1) Installed from: Ubuntu Packages KNetworkManager in my case shows this data: Frequency: 54000 MHz. You know, it's impossible for WiFi. Real frequency of my AP is 2.462 GHz. Max. speed: 0. I don't know real max speed, but is't not zero. Bitrate: 2 Mbit/sec. Real bitrate is 54 Mbit/sec (by iwconfig). It's problem of KNetworkManager? Kubuntu 10.04.
Created attachment 53044 [details] Screenshot comparing iwconfig and knetworkmanager info Screenshot showing both information from iwconfig and knetworkmanager
The monolithic knetworkmanager is umaintained and nobody is fixing bugs in it as far as I know. Please use the plasmoid version instead.