My "ifconfig" shows 3 interfaces: eth1 lo usb0 The settings dialog of the applet shows these: usb0 wlan1 eth1 When I enable all of the 3 in the dialog, clicking OK shows in the applet now FIVE interfaces: eth0 wlan0 eth1 usb0 wlan1 Right-click on the applet -> Network Monitor Settings now shows again usb0 wlan1 eth1 but NONE of these 3 is checked now, although I checked all of them before. Checking usb0 leads to suddenly ALL of the three being checked. Very strange things happen here... Note that my laptop has a wlan device, but in the nm-settings I disabled wlan.
Since I already have my own desktop shell, liquidshell, I don't care any longer.