CF9 Administrator Login Page not displaying

We are running CF9 with Apache on 6 different servers.  According to our SAs, all of the configurations are the same.  However, on one server when we try to access /CFIDE/administrator/index.cfm, it will not display.  They say that there is no error in web server or CF log.  They have checked the permissions and everything looks good.  Has anyone ever seen this before and can offer any advice as to where to look?  Any assistance would be greatly appreciated. P.S. Coldfusion is up and running just fine on that server.  We have stopped/restarted both server and CF several times.