When running the all configuration from the current jboss 4.0 branch under jdk1.5.0 the org.jboss.test.webservice.marshalltest.MarshallDocLiteralTestCase
fails due to a deployment failure:

Caused by: java.lang.ClassCastException:
javax.xml.namespace.QName
at java.util.Arrays.mergeSort(Arrays.java:1156)
at java.util.Arrays.mergeSort(Arrays.java:1167)
at java.util.Arrays.mergeSort(Arrays.java:1167)
at java.util.Arrays.mergeSort(Arrays.java:1167)
at java.util.Arrays.mergeSort(Arrays.java:1167)
at java.util.Arrays.sort(Arrays.java:1080)
at org.jboss.webservice.deployment.WSDDGenerator.appendTypeMappings(WSDDGenerator.java:115)
at
org.jboss.webservice.AxisService.generateDeploymentWSDD(AxisService.java:420)
at
org.jboss.webservice.AxisService.deployService(AxisService.java:243)
at
sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
at
sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:39)
at
sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:25)
at java.lang.reflect.Method.invoke(Method.java:585)
at
org.jboss.mx.interceptor.ReflectedDispatcher.invoke(ReflectedDispatcher.java:144)
... 75 more

Perhaps some conflict between the jboss QName and the jdk QName.
This is sourceforge issue: [ jboss-Bugs-1061958 ] Java5 MarshallDocLiteralTestCase Failures.