I have downloaded jboss-4.2.0.CR1 and patched it with jbossws-1.2.0.SP1. When I start the server I get a lot of warnings in the log with ServideRefHandler:
2007-04-19 14:58:09,503 WARN [org.jboss.metadata.serviceref.ServiceRefHandlerFactory] Not registered: jboss.ws:service=ServiceRefHandler
Upgrading to Jboss 4.2 CR2 solved the problem