Other differences that we have noticed from CR3 are: - You need to have the section in your datasource or you will get the following exception on startup: | 10:56:00,546 WARN [ServiceController] Problem starting service jboss.ejb:persis | tencePolicy=database,service=EJBTimerService | java.lang.IllegalStateException: Cannot find datasource meta data: jboss.jdbc:da | tasource=DefaultDS,service=metadata | - The installer now creates the configuration "messaging" instead of "standalone-messaging". This was giving us grief, as we had an automated target in our application build script to configure JBoss with our queues and datasource. - The JBoss messaging deployment is now named "jboss-messaging.sar" instead of "jboss-messaging" View the original post : http://www.jboss.com/index.html?module=bb&op=viewtopic&p=3965148#... Reply to the post : http://www.jboss.com/index.html?module=bb&op=posting&mode=reply&a...