I have OWA setup on my Exchange 2003 server and it works perfectly for several days. At some point it quicks working and when I go to the site I get the message "HTTP Error 500.13 - Server error: Web server is too busy. Internet Information Services (IIS)". I receive that error message after I see the "security alert" window that asks me if I want to Procedd. When I click Yes I receive the above error. If I restart my exchange box everything will be fine again. The only errors in my event log are browser errors and some exchange errors corresonding to offline address books. can anyone help?