I have created a web SITE with an App_Code folder. Instead of using the session object I have been adding properties to my SessionHandler object in the App_code folder. It works great when I am running it locally. It worked fine on previous builds on the dev web server. Then I added an AJAX extension server side timer control and now I have intermittant problems getting values back from my SessionHandler object in the App_code folder. When the tick event fires I write to the db and I can see that the Public Shared Property UserName() As Go to the complete details ...