Hello,
At the end of the body of test401Compatibility() I see the following lines:
System.out.println("serialVersionUID mismatches = "+mismatchCount);
System.out.println("serialVersionUID mismatches = "+mismatchCount);
One of them seems redundant.
I've created an entry in JIRA for that one too:
http://jira.jboss.com/jira/browse/JBAS-3852