I've noticed the service called GTalkService starts automatically after the Droid phone has been returned on. This service starts automatically regardless of the "Automatically sign in" option in the Talk client.
This wouldn't be so bad except the service itself takes up approx 6.0-6.5MB of RAM when it doesn't appear to be doing anything.
Does anyone know if GTalkService handles something else besides the Talk client? Is there a way to disable this service from starting up with the phone?