I\'m connecting to a web service from .NET, like:
var request = (HttpWebRequest) WebRequest.Create(uri);
request.Credentials = new NetworkCredential(\"usr\",
It looks like you need to install this hotfix might help you out:
http://support.microsoft.com/?kbid=924638
Your problem was probably happening because you weren't able to set the KeepAlive property to false when you're using the HTTP adapter to post a message
Also ensure PreAuthenticate is set to true.