Scott, I'm working on making the switch now. The work required is: 1) Update to the lastest snapshot of the classloader project to fix a bug in getPackage() 2) Change bootstrap-beans.xml 3) Add osgi.jar to the bootstrap-beans.xml classloader 4) Check it doesn't seriously break the testsuite/tck (it will break the old UCL tests in the testsuite - that is expected) 5) Once any issues found are resolved do a proper release of (1) and update the other configurations - e.g. profile service test and jboss embedded Using the new classloader is a prerequiste for modularizing the bootstrap-beans.xml which in turn solves a number of other issues like the @JMX annoation getting deployed too late. View the original post : http://www.jboss.com/index.html?module=bb&op=viewtopic&p=4118675#... Reply to the post : http://www.jboss.com/index.html?module=bb&op=posting&mode=reply&a...