Strange one! Can you look into server.log (for DEBUG level logs) to see if you find more information? Logs like bean being undeployed or removed from JNDI? And is it always after 24000 calls that you see this issue? I mean, if those 24000 calls happen in a single day, do you still see this issue? Which version and vendor of Java do you use? Can you post a sample stateful bean code (with the annotations) and any corresponding xml configuration files for these beans? View the original post : http://www.jboss.org/index.html?module=bb&op=viewtopic&p=4229503#... Reply to the post : http://www.jboss.org/index.html?module=bb&op=posting&mode=reply&a...