I have ran into wall with this one.
I used wconsume to create a 2 web service clients. The clients are part of an application that is deployed on Jboss-4.2.2.GA. The first client works just fine. However the second client gets an "Invalid HTTP server response [401]" - Unauthorized" error. The second client tries to communicate with a web service that requires authentication. I have been using the folowing code to provide my credentials.

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 InquiryPortType inqPort = InquiryWsIntf.getInquiryGWWSHTTPPort();
 BindingProvider bp = (BindingProvider)inqPort;

 bp.getRequestContext().put(BindingProvider.USERNAME_PROPERTY, "userName");

 bp.getRequestContext().put(BindingProvider.PASSWORD_PROPERTY, "passWord");
 return nqPort.someMethod(String);
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Hello World.

Exception in thread "main" javax.xml.ws.WebServiceException: java.io.IOException: Could not transmit message
 at org.jboss.ws.core.jaxws.client.ClientImpl.handleRemoteException(ClientImpl.java:317)
 at org.jboss.ws.core.jaxws.client.ClientImpl.invoke(ClientImpl.java:255)
 at org.jboss.ws.core.jaxws.client.ClientProxy.invoke(ClientProxy.java:164)
 at org.jboss.ws.core.jaxws.client.ClientProxy.invoke(ClientProxy.java:150)
 at $Proxy16.doBatchAuthWS(Unknown Source)
 at com.cbc.services.salt.inquiry.InquiryInterface.transactInquiry(InquiryInterface.java:89)
 at com.cbc.services.salt.inquiry.InquiryInterface.main(InquiryInterface.java:28)
Caused by: java.io.IOException: Could not transmit message
 at org.jboss.ws.core.client.RemotingConnectionImpl.invoke(RemotingConnectionImpl.java:204)
 at org.jboss.ws.core.client.SOAPRemotingConnection.invoke(SOAPRemotingConnection.java:77)
 at org.jboss.ws.core.CommonClient.invoke(CommonClient.java:337)
 at org.jboss.ws.core.jaxws.client.ClientImpl.invoke(ClientImpl.java:243)
 ... 5 more
Caused by: org.jboss.remoting.CannotConnectException: Can not connect http client invoker.
 at org.jboss.remoting.transport.http.HTTPClientInvoker.useHttpURLConnection(HTTPClientInvoker.java:333)
 at org.jboss.remoting.transport.http.HTTPClientInvoker.transport(HTTPClientInvoker.java:135)
 at org.jboss.remoting.MicroRemoteClientInvoker.invoke(MicroRemoteClientInvoker.java:122)
 at org.jboss.remoting.Client.invoke(Client.java:1634)
 at org.jboss.remoting.Client.invoke(Client.java:548)
 at org.jboss.ws.core.client.RemotingConnectionImpl.invoke(RemotingConnectionImpl.java:183)
 ... 8 more
Caused by: org.jboss.ws.WSException: Invalid HTTP server response [401] - Unauthorized
 at org.jboss.ws.core.soap.SOAPMessageUnMarshaller.read(SOAPMessageUnMarshaller.java:77)
 at org.jboss.remoting.transport.http.HTTPClientInvoker.readResponse(HTTPClientInvoker.java:473)
 at org.jboss.remoting.transport.http.HTTPClientInvoker.useHttpURLConnection(HTTPClientInvoker.java:305)
 ... 13 more