I seem to be experiencing a problem with the gateway.
The first time I register with the Yahoo transport all goes well. The transport logs into Yahoo and my Yahoo buddies appear on the XMPP roster.
When unregistering the Yahoo buddies are correctly removed from the XMPP roster.
However, when I directly register again with the transport, the transport does not log in to the Yahoo network.
Only after disconnecting and reconnecting the XMPP client, the transport logs in to the Yahoo network and the buddies are placed on the roster.