tests-jbpapp9326: fails abruptly on IBM JDK due to ServerShutdownException

https://jenkins.mw.lab.eng.bos.redhat.com/hudson/view/EAP5/view/AS-TestSuite/job/eap-5.2.x-JDK6-RHEL6-matrix/jdk=ibm16,label=RHEL6_x86/lastCompletedBuild/consoleText

[server:start] Server started.
[echo] Starting patternset=jbpapp9326.includes-1 config=
[junit] Running org.jboss.test.jmx.test.JVMShutdownShutdownTestCase
[junit] Tests run: 1, Failures: 0, Errors: 0, Time elapsed: 11.794 sec

BUILD FAILED
/mnt/hudson_workspace/workspace/eap-5.2.x-JDK6-RHEL6-matrix/jdk/ibm16/label/RHEL6_x86/jboss-eap-5.2-src/jboss-as/testsuite/build.xml:1748: The following error occurred while executing this line:
/mnt/hudson_workspace/workspace/eap-5.2.x-JDK6-RHEL6-matrix/jdk/ibm16/label/RHEL6_x86/jboss-eap-5.2-src/jboss-as/testsuite/imports/config/tests-jbpapp9326.xml:42: java.lang.IllegalArgumentException: The jbpapp9326 server is already running.

Total time: 524 minutes 49 seconds
Testsuite shutdown hook found server "jbpapp9326" still running; stopping it.
Shutting down server: jbpapp9326
Writing server thread dump to /mnt/hudson_workspace/workspace/eap-5.2.x-JDK6-RHEL6-matrix/jdk/ibm16/label/RHEL6_x86/jboss-eap-5.2-src/jboss-as/build/output/jboss-5.2.0/server/jbpapp9326/log/threadDump.log
Failed to shutdown server "jbpapp9326". Destroying the process.
Testsuite shutdown hook failed to stop server(s) on shutdown.
org.jboss.jbossas.servermanager.ServerShutdownException: Failed to shutdown server.Process was destroyed.
at org.jboss.jbossas.servermanager.ServerController.stopServer(ServerController.java:446)
at org.jboss.jbossas.servermanager.ServerManager$1.run(ServerManager.java:80)
Caused by: javax.naming.NameNotFoundException: RMIAdaptor not bound
at java.lang.Throwable.<init>(Throwable.java:67)
at javax.naming.NamingException.<init>(NamingException.java:98)

JVMShutdownHaltTestCase testcase fails frequently(mostly passes on RHEl5 but fails on RHEl6) with following stacktrace:

Stacktrace

java.lang.reflect.UndeclaredThrowableException
at $Proxy2.halt(Unknown Source)
at org.jboss.test.jmx.test.JVMShutdownHaltTestCase.testHalt(JVMShutdownHaltTestCase.java:64)
Caused by: java.rmi.UnmarshalException: Error unmarshaling return header; nested exception is:
java.io.EOFException
at sun.rmi.transport.StreamRemoteCall.executeCall(StreamRemoteCall.java:209)
at sun.rmi.server.UnicastRef.invoke(UnicastRef.java:142)
at org.jboss.invocation.jrmp.server.JRMPInvoker_Stub.invoke(Unknown Source)
at org.jboss.invocation.jrmp.interfaces.JRMPInvokerProxy.invoke(JRMPInvokerProxy.java:133)
at org.jboss.invocation.InvokerInterceptor.invokeInvoker(InvokerInterceptor.java:416)
at org.jboss.invocation.InvokerInterceptor.invoke(InvokerInterceptor.java:248)
at org.jboss.jmx.connector.invoker.client.InvokerAdaptorClientInterceptor.invoke(InvokerAdaptorClientInterceptor.java:66)
at org.jboss.proxy.SecurityInterceptor.invoke(SecurityInterceptor.java:68)
at org.jboss.proxy.ClientMethodInterceptor.invoke(ClientMethodInterceptor.java:74)
at org.jboss.proxy.ClientContainer.invoke(ClientContainer.java:101)
at $Proxy1.invoke(Unknown Source)
at org.jboss.test.jmx.test.ServerProxyHandler.invoke(ServerProxyHandler.java:57)
Caused by: java.io.EOFException
at java.io.DataInputStream.readByte(DataInputStream.java:250)
at sun.rmi.transport.StreamRemoteCall.executeCall(StreamRemoteCall.java:195)