[jadmin] ICQ transport timeout?

[Daniel]

Using the ICQ transport successfully, I recognized that 
after disconnecting the client (JabberIM or WinJAB alike),
the ICQ user stays online for ever in my ICQ client.

Only by explicitely loging out of the gateway on the client,
the presence in ICQ goes offline too. Changing the user
does also have the same effect.

Is there a timeout I can set on the server/gateway for ICQ
connections?

Thanks for any pointer.

Regards
Daniel