We added another feature to our code that determines if the browser is already loaded jQuery and that way we will not load it again. We have seen additional speed improvement of 30%-40% o top of the existing speed improvement we got from the CDN distribution and Gzip compression. For this last change a change of our code is needed on everyone that installed the code before June 29. For this got to Settings -> Project Settings -> Project Code in the application and please update the code of your sites with the new one to benefit from the latest 30%-40% speed improvement.
PS: thanks Bill, Guy and Andy for helping us on this improvement.