When running JBoss 4.0.1sp1 using JRockit 5.0 on Windows XP, the following error appears. Running with Sun JDK 1.5.0 is fine. Has anybody used JRockit 5.0 successfully?

14:53:12,023 WARN [XMLLoginConfigImpl] End loadConfig, failed to load config: file:/C:/cvs_views/jboss-4.0.1sp1/server/default/conf/login-config.xml
org.jboss.security.auth.login.ParseException: Encountered "<?xml" at line 1, column 1.
Was expecting one of:

...

at org.jboss.security.auth.login.SunConfigParser.generateParseException(SunConfigParser.java:389)
at org.jboss.security.auth.login.SunConfigParser.jj_consume_token(SunConfigParser.java:327)
at org.jboss.security.auth.login.SunConfigParser.config(SunConfigParser.java:98)
at org.jboss.security.auth.login.SunConfigParser.parse(SunConfigParser.java:57)
at org.jboss.security.auth.login.SunConfigParser.doParse(SunConfigParser.java:79)
at org.jboss.security.auth.login.XMLLoginConfigImpl.loadSunConfig(XMLLoginConfigImpl.java:295)
at org.jboss.security.auth.login.XMLLoginConfigImpl.loadConfig(XMLLoginConfigImpl.java:279)
at org.jboss.security.auth.login.XMLLoginConfigImpl.loadConfig(XMLLoginConfigImpl.java:253)
at org.jboss.security.auth.login.XMLLoginConfig.startService(XMLLoginConfig.java:152)
at org.jboss.system.ServiceMBeanSupport.jbossInternalStart(ServiceMBeanSupport.java:272)
at org.jboss.system.ServiceMBeanSupport.jbossInternalLifecycle(ServiceMBeanSupport.java:222)
at jrockit.reflect.VirtualNativeMethodInvoker.invoke(Ljava.lang.Object;[Ljava.lang.Object;)Ljava.lang.Object;(Unknown Source)
at java.lang.reflect.Method.invoke(Ljava.lang.Object;[Ljava.lang.Object;I)Ljava.lang.Object;(Unknown Source)
at org.jboss.mx.interceptor.ReflectedDispatcher.invoke(ReflectedDispatcher.java:144)
at org.jboss.mx.server.Invocation.dispatch(Invocation.java:80)
at org.jboss.mx.server.Invocation.invoke(Invocation.java:72)
at org.jboss.mx.server.AbstractMBeanInvoker.invoke(AbstractMBeanInvoker.java:249)
at org.jboss.mx.server.MBeanServerImpl.invoke(MBeanServerImpl.java:642)
at org.jboss.system.ServiceController$ServiceProxy.invoke(ServiceController.java:891)
at $Proxy0.start()V(Unknown Source)
at org.jboss.system.ServiceController.start(ServiceController.java:416)
at jrockit.reflect.VirtualNativeMethodInvoker.invoke(Ljava.lang.Object;[Ljava.lang.Object;)Ljava.lang.Object;(Unknown Source)
at java.lang.reflect.Method.invoke(Ljava.lang.Object;[Ljava.lang.Object;I)Ljava.lang.Object;(Unknown Source)
at org.jboss.mx.interceptor.ReflectedDispatcher.invoke(ReflectedDispatcher.java:144)
at org.jboss.mx.server.Invocation.dispatch(Invocation.java:80)
at org.jboss.mx.server.Invocation.invoke(Invocation.java:72)
at org.jboss.mx.server.AbstractMBeanInvoker.invoke(AbstractMBeanInvoker.java:249)
at org.jboss.mx.server.MBeanServerImpl.invoke(MBeanServerImpl.java:642)
at org.jboss.mx.util.MBeanProxyExt.invoke(MBeanProxyExt.java:177)
at $Proxy4.start(Ljavax.management.ObjectName;)V(Unknown Source)