By "everytime", I will assume you mean after you have already signed in once. Perhaps your connection has "timed out." Many high volume web sites will automatically take your browser back to the sign-in page and then terminate your access after a period of time with no activity. This makes the port you were using available to other subscribers. If this is indeed the cause of your "problem", there are utility programs available that will send periodic pulses to the service to reset the count down timer before it drops your connection.