Or setup is following: The users are connected with the same username and with two differen ressources. In this case the messages sometimes get delivered with a delay of several minutes. Does anybody have same problems or any ideas?
Any chance you have a specific test case that can reproduce the error? Also, can you check the XML of the messages being delivered late to see if there is a “delay” element inserted? That will tell us if the server was storing the messages offline for later delivery.