If you see the CacheMgmtInterceptor mbean in your JBoss JMX Console display, then UseInterceptorMbeans is definitely enabled. The main TreeCache mbean (e.g., service=TreeCacheXX) and the CacheMgmtInterceptor mbean both have attributes named "Number of Nodes" and "Number of Attributes." Are these entries non-zero and correct in both mbeans? The CacheMgmtInterceptor mbean obtains this information directly from the TreeCache mbean so the values should be identical. I added the JBossCache 1.4SP1 jar to my JBossAS 4.0.4GA server and found that the tomcat cache instance did successfully display statistics. I just used the cache's mbean to add and retrieve some nodes; the statistics mbean displayed the expected results. View the original post : http://www.jboss.com/index.html?module=bb&op=viewtopic&p=3979124#... Reply to the post : http://www.jboss.com/index.html?module=bb&op=posting&mode=reply&a...