xmpp_setstatus: send presence to MUC rooms before the global presence It only matters (AFAICS) when going offline. We want the presence to be sent by mcabber and not by the server, especially if we're using PGP.

 /DISCONNECT

Terminate the connection to the Jabber server.
Note: the roster is only available when the connection to the server is active, so the buddylist is empty when disconnected.