The following jars are different when comparing their versions from RPM and ZIP distributions:

---- jbossjts.jar
[root@ibm-ls22-01 jboss-as]# jar tf /root/workspace/jboss-eap-5.1/jboss-as/common/lib/jbossjts.jar | grep com/arjuna/ats/internal/jta/resources/jts/orbspecific/XAResourceRecord.class
com/arjuna/ats/internal/jta/resources/jts/orbspecific/XAResourceRecord.class
[root@ibm-ls22-01 jboss-as]# jar tf /var/lib/jbossas/common/lib/jbossjts.jar | grep com/arjuna/ats/internal/jta/resources/jts/orbspecific/XAResourceRecord.class
[root@ibm-ls22-01 jboss-as]#