WebService Call
#PRB: Contention, poor performance, and deadlocks when you make Web service requests from ASP.NET applications
http://support.microsoft.com/?id=821268

#At Your Service: Performance Considerations for Making Web Service Calls from ASPX Pages
http://msdn.microsoft.com/library/default.asp?url=/library/en-us/dnservice/html/service07222003.asp

WebApplication