that's interesting: the code coverage using the unit tests shows that we go through some of our JMS code. I'll check if it is not the sign of hidden dependencies to the JMS code in the core code. btw, shouldn't we take the opportunity now we've released JBM 2.0 alpha to split our source code between the core and the jms layer? If we do this split, the compiler can check that we don't introduce a dependency between from JMS to the core code quite easily. View the original post : http://www.jboss.com/index.html?module=bb&op=viewtopic&p=4155912#... Reply to the post : http://www.jboss.com/index.html?module=bb&op=posting&mode=reply&a...