Naaawww, that "trick" with setting UseJBossWebLoader to true in jbossweb-tomcat55.sar/META-INF/jboss-service.xml doesn't really work either - as soon as I redeploy the webapp I get a ClassCastException again. It seems upon redeploying a new classloader is used so it is again not the same as the one used by the cache. After a restart it works fine again - until I redeploy the webapp. Torsten View the original post : http://www.jboss.com/index.html?module=bb&op=viewtopic&p=4093736#... Reply to the post : http://www.jboss.com/index.html?module=bb&op=posting&mode=reply&a...