Server Application Unavailable

I'm getting "Server Application Unavailable" on my windows 2k server machine. I ran aspnet_regiis -i and it did not help. Since that is all I know to do, I am stuck. Any ideas?Can you create a simple virtual web and put an html file into it?

Has IIS crashed?
It sometimes happens with me, make sure you don't have AN INFINITE LOOP, i had it once and and the problem was because of an infinite loop.
also, you might have a problem if you are printing on the screen using Response.Write(), if you are printing large amount of data, try to send them to a database or text file instead of printing them to the screen. Try them !!!! and report to me.
Have you ever managed to uncover any info regarding this problem? I'm having the same one. I ran aspnet_regiis -i and it restored functionality. However, on two other occasions it did not help. I'm currently under this black cloud. Thanks, Mike Schultz