I have a telerik popup window that loads a partial view. This popup works on my laptop but does not work on Windows 2003 Server. What I noticed when debugging the code on 2003 server is that the ActionResult LogOn() method continues to get called as if in a loop. This does not happen on my Windows 7 laptop. The popup window loads but the partial view does not show in the popup. It works fine on my laptop. Any ideas?