Vista - Regarding Http Connections

Hi all,

I have a service application that is making HTTP request periodically
through HttpWebRequest class. All is working fine but sometimes the
connection from the server became unstable and the requests become stuck
somewhere (we know this as we continously monitor the server ip by pinging it
time to time with a tool created by us) . The result is that the further http
requests also stuck somewhere even after the server connection becomes good
and it seems like server did not receive any request from client. Now when I
restart the service application again it starts working fine.
I also check ServicePoint and ServicePointManager classes and set as follows

ServicePoint..MaxIdleTime = 10000
ServicePoint.ConnectionLeaseTimeout = 10000

Is there any possibility that connections are stuck or the whole process
would stuck due to unstable(or very very slow) connection situation from the
server?

Can anyone please help me in this regard? Also we have handling the client
only and server is not in our hand so the answers come for teh client is
highly helpful for us?

Regards
Danish