"jesper.pedersen" wrote : My point is here - why do we have to define a DEFAULT_BOOT_LIBRARY_LIBS in our Main ? Splitting our classloader structure into multiple layers shouldn't be needed. | | Passing the classloader defined in Main to the bootstrap implementation should be enough. You've lost me. All I do in AS Main is pass the CL to the bootstrap impl. ClassLoader newCl = new URLClassLoader(allTheStuffInBootLib); | Server server = ServerFactory.createServer(newCl); | Thread.currentThread().setContextClassLoader(newCl); | server.start(); What are you proposing should be done instead? S, ALR View the original post : http://www.jboss.org/index.html?module=bb&op=viewtopic&p=4233980#... Reply to the post : http://www.jboss.org/index.html?module=bb&op=posting&mode=reply&a...