Web Service Dynamic URL Problem

Hello group,

I have a window service that is a client to a Web Service. In the app.config
file of my window service, i specify the url of the web service. When i
compile it and run it, it goes to the correct url but if i stop the window
service and run it again without ANY change to the code, it does not go to
the specified url in the app.config file, rather it calls the same web
service but on localhost (that i was using initially for testing). What is
going on?

Regards
Wajih