Hello, I have never used an app server in more than the most fleeting of terms. I have used Tomcat for a number of years and have now hit a problem that I am not sure how to solve. The problem is as follows: 1) I have several web apps running in Tomcat; 2) They need to share objects between them, specifically Spring Security objects that assist with login; 3) Currently I think I am hitting a classloader issue where, because Tomcat initiates the webapps with different classloaders the objects are considered to be different when I pass them around through the servletContexts. If I used JBoss, could I pass my object from WebApp-A through JBoss, to WebApp-B and use it without getting my current ClassCastException? I am thinking this won't work as Tomcat would still be responsible for creating the Spring Security object. I think I would need to implement all the authentication in JBoss whereas currently I am using Jasig's Central Authentication Service which runs as a war file in Tomcat. View the original post : http://www.jboss.com/index.html?module=bb&op=viewtopic&p=4199517#... Reply to the post : http://www.jboss.com/index.html?module=bb&op=posting&mode=reply&a...