I have installed WICD and this does not fix the problem. The pre-disconnection script setting looked promising but this only runs when you manually disconnect from the wireless network - not when the XFCE session shuts down. I prefer Network Manager, particularly for an 'average' user - it is simpler and the applet icon illustrates the signal strength. Can anyone point me in the right direction for writing a script that runs when the XFCE session is closing ? - as a get-around. I would prefer if I can just use python since this is just temporary. Can anyone tell me the (XFCE?) library that should look at ? - and maybe suggest objects/methods, etc.