Scott Guthrie announced the launch of the Microsoft Ajax CDN on his blog last night. If you have not read his post, I recommend that you read it now to get a general overview of the CDN and how you can take advantage of the CDN to improve the performance of your ASP.NET Web Forms and ASP.NET MVC applications: http://weblogs.asp.net/scottgu/archive/2009/09/15/announcing-the-microsoft-ajax-cdn.aspx In his announcement, Scott describes how both the ASP.NET Ajax and the jQuery libraries are included in the CDN. There is one more set of JavaScript files that we added to the CDN today that Scott did not announce: the jQuery Validation...