I hope I'm explaining this clearly. I added a Web Service Proxy to my FlexViewer project so I assume it is an HTTPService although it is not explicitly defined in MXML. That is, I use the .send method. I'll attach the Flex Widget code that I have. When I watch the http traffic in Fiddler the send method goes off but nothing appears to come back. So I repeat again, nothing, repeat again, and it works fine and then continues to work for the rest of the work day. I have my suspicions about our Firewall and have inquired if the Firewall might be dropping the initial connections or it itself has a timeout for a response or something. I thought if there was a timeout value that I could extend indefinitely I could rule out a problem on the Flex client side and convince the Security people to have a look at the Firewall.