service=EJB already registered

Hi all
i've created 2 ear files and when i put them both in server\default\deploy i get the following error

service=EjbModule javax.management.InstanceAlreadyExistsException: jboss.j2ee:jndiName=Address,service=EJB already registered.

i created 2 datasouce files xxx-ds.xml  yyy-ds.xml both connect to different database both have different <jndi-name> xxxx </jndi-name> names

i've searched in jar files for ejb-jar.xml for the jndi name to make sure i don't have the same name for my datasources.  i've searched the jboss-app.xml to make sure the <loader-repository> is looking at the correct ear.  But now i'm clutching at straws

When i deploy the ears separately there  is no problem.  i'm missing something, i just know don't where to look or what to look for

any help much appreciated

thanks