Auto Discovery service in WinHTTP web proxy with Windows Server 2003

I am facing problems with my Cloud Distributed offshore Server. The processor is 2.8 GHz 3 Core AMD and RAM size is 3 GB. All the times HTTP web proxy auto discovery service is getting into hang state and it is not giving any error messages. The information is available in the event log only. When this problem happens, the server is losing connectivity up to fifteen minutes and it comes back with the auto star service. If anybody knows why this is happening, please let me know. Thanks in advance.
