creating new javax.xml.ws.Service not returns

Question

I am having a strange problem occuring somtimes from a specific machine (windows 2003).

I am trying to create a new javax.xml.ws.Service instance with host and qname as parameters.

service = new SomeService(url, qName);

the service creation (ONLY SOMETIMES!) never returns. While the creation is stucked on my prod machine, development machines are working OK.

I am running with Java 5 on jboss 4.2.3

Any suggestions? I'm pretty puzzled.