After a month of looking into this, googling, and trying different "solutions" it has me stumped. We have a server with plenty of hardware to support the number of sites we are running on it, however, we consistently run into the "Server too Busy" error message.
This message normally last 30 seconds to a minute, and then the site functions as if nothing has happened. I can never force this to occur, no matter how many requests I fire at any of the sites on the server, it never will happen.
My question really boils down to what could cause this, and how can I correct it.