GET and POST to a webservice on ASP.net (c#)

I think that I explained that there... yes I have to press the reset button in the middle... may be my english was not good enough to express my thoughts lol

Excuse me, I misinterpreted you final comment. What do you do before the first run? Power up the Arduino? Upload the sketch? How much time is between "Connecting..." and "Connection failed"? Do you have full control over the server the Arduino is connecting to?