When I call the createSubscriber message on a topic over a slow link. (Jboss is running on a server over a 56k modem link) it takes aprox 2 minutes for the call to execute. However if I run it on a LAN it is done instantly. Is this likely to be a problem in my code, in the way JBossMQ is set up (I have just added a new topic and made no other changes in jbossmq-destinations.xml) or with the network link. Other services such as recieving objects from Remote EJB calls work fine with only a few second wait - it appears only the JMS is causing me a problem at the moment. I am using JBoss 3.0.6 + Tomcat.