[Asterisk-Users] Agent refuses to log out

[Asterisk]

Well, sort of :)

We have agents using the AgentLoginCallBack functionality. The agents 
log in using their agent number, with the extension automatically 
entered for them.

When they log out, they again use the AgentLoginCallBack app, but using 
just a "#" for the new extension (logs them out).

Occasionally, an Agent simply refuses to log out. You get a message 
"That Agent Is Already Logged On"

A "Agent Logoff Agent/xxx" from the CLI does not work either. Looking at 
the channels, I see

pbx*CLI> show channels
         Channel  (Context    Extension    Pri )   State Appl.         Data
Local/6002 at AgentQ-95d2,1  (AgentQ     s            1   )    Down (None) 
        (None)
1 active channel(s)

I am making an assumption when I say that this can't be right - I 
thought that there would always be 2 channels at least (source and dest).

What is causing this ? How can I hang this channel up ? Is this channel 
causing the Agent logoff problem ? - Oh, the Agent cannot logon either :(

Julian