Here are my library versions: -rw-r--r-- 1 root root 2309955 22. Okt 16:44 hibernate-core-3.3.2.GA.jar | -rw-r--r-- 1 root root 60062 21. Aug 20:03 hibernate-jbosscache2-3.3.2.GA.jar /usr/local/lib64/java/jdk/bin/jar tvf hibernate-core-3.3.2.GA.jar | grep org.hibernate.cache.RegionFactory | 939 Wed Jun 24 01:55:42 CEST 2009 org/hibernate/cache/RegionFactory.class /usr/local/lib64/java/jdk/bin/jar tvf hibernate-jbosscache2-3.3.2.GA.jar | grep org.hibernate.cache.jbc2.MultiplexedJBossCacheRegionFactory | 695 Wed Jun 24 01:57:18 CEST 2009 org/hibernate/cache/jbc2/MultiplexedJBossCacheRegionFactory.class View the original post : http://www.jboss.org/index.html?module=bb&op=viewtopic&p=4261761#... Reply to the post : http://www.jboss.org/index.html?module=bb&op=posting&mode=reply&a...