I just fixed up my seam 2.1 app so it will run on jboss 5, I just thought I would post some of the issues I encountered in case someone finds in useful:

1 - The EntityManagerFactory can no longer be bound to JNDI, I got around this using the following:

@Stateless
@Name("entityManagerFactory")
public class EntityManagerFactoryHackBean implements EntityManagerFactoryHackLocal {

     @PersistenceUnit(name="main")
     EntityManagerFactory factory;
     
     @Unwrap
     public EntityManagerFactory getEntityMangagerFactory()
     {
          return factory;
     }
     
}

and in components.xml

<persistence:managed-persistence-context name="entityManager"
          entity-manager-factory="#{entityManagerFactory}"
          scope="conversation" auto-create="true" />

2 - drools:rules-agent could not load the properties file for the WEB-INF directory, when I moved in it to the EAR's META-INF dir it worked fine.

3 - I had to declare all JMS Queues as mbeans

Thats about it, I hope someone finds this useful.

Stuart