getting "Associations marked as mappedBy must not define database mappings like @JoinTable or @JoinColumn" in JBoss EPP 5.1

Issue

• moving to EPP 5.1 from 4.3.0. An Hibernate/DAO EJB jar that deploys fine and runs on 4.3 is not deploying on 5.1:

  2011-03-01 15:45:21,769 ERROR [org.jboss.kernel.plugins.dependency.AbstractKernelController] Error installing to Start: name=persistence.unit:unitName=db-ams-ejb-1.0.1.jar/\#db-ams state=Create  
  org.hibernate.AnnotationException: Associations marked as mappedBy must not define database mappings like @JoinTable or @JoinColumn: us.tx.state.oag.ams.domain.InfoMessage.infoAddresses
  
  

  Also found this under the 5.1 release notes:

https://issues.jboss.org/browse/JBPAPP-2082

But there doesn't seem to be a resolution. Is this a show stopper? Is there something I can change in the domain/dao class to clear the error?