out of the box shutdown fails java.lang.NoClassDefFoundError javax.management.MalformedObjectNameException

Standard out of the box, using all configuration
When I attempt to shutdown:

JBOSS_CMD_STOP = java -classpath /opt/jboss/jboss-5.0.1.GA/bin/shutdown.jar:/opt/jboss/jboss-5.0.1.GA/client/jbossall-client.jar org.jboss.Shutdown --shutdown -s 10.199.74.23

Exception in thread "main" java.lang.NoClassDefFoundError: javax.management.MalformedObjectNameException
at org.jboss.mx.util.ObjectNameFactory.create(ObjectNameFactory.java:52)
at org.jboss.system.server.ServerImplMBean.<clinit>(ServerImplMBean.java:35)
at java.lang.Class.initializeClass(libgcj.so.7rh)
at org.jboss.Shutdown.main(Shutdown.java:118)

Is the out of the box classpath of the shutdown command incorrect or are classes missing?
It may be fixed in 5.1.0 but I need to use 5.0.1. Any suggestions?