When installing ArcGIS 9.3 on Windows Server 2008, you have to  make sure UAC is disabled. If not, the install will go fine, but when you get to the ArcGIS Server Manager to change the user store to SQL or Windows Users and Groups, it will show users and groups grayed out, and it will [...]

YES.
Currently ESRI is only supporting ArcGIS Server 9.3 and Apache for reverse proxy. Over the past few days, I was able to use Microsoft ISA Server 2006 Enterprise Edition as a reverse proxy to allow external users to access the ArcGIS Server. The best part, we used forms based authentication and Active Directory. The external [...]