In Application Server 8, users were able to specify the following system property to optionally turn on some Object Request Broker (ORB) performance optimization:
-Djavax.rmi.CORBA.UtilClass=com.iplanet.ias.util.orbutil.IasUtilDelegate
The ORB performance optimization is turned on, by default, in Enterprise Server. If you are using the preceding system property reference, you must remove it to avoid interfering with the default optimization.