have you tried setting all options?
http.proxyPort, http.proxyHost, proxySet ?
Yep, I've tried them all. Even tried setting them for JBoss server in the boot options.
I had the same problem. After trying to get around the issue by using my own SOAPConnectionFactory it magically worked.
I think it is because I added saaj-impl.jar to my classpath.
Not sure why, but that helped me.
Disregard the previous message. I started cleaning up and took that implementation jar out of the classpath. It still 'magically' works.
sorry to get your hopes up ;-)