ASP.NET Cookieless Feature Works

Our site was getting HTTP 302 errors and causing a major performance hit on our server.

The cause was in our web.config file.

We were setting cookies=AutoDetect which was causing multiple 302 errors.
Setting cookies=UseCookies solved our performance issue.

AutoDetect uses 302 to try to get additional information on the browsers cookie support.

See attached MSDN doc for the "Understand How the ASP.NET Cookieless Feature Works"

More...
http://msdn.microsoft.com/en-us/library/aa479315.aspx