>Happens when IIS recycles the process. What settings do you have for 'Recycling' ?

Not in here. I control when the IIS recycles and this is at 06h00 and this is not even close. I never saw that message before. This is a trigger that I am wondering about as this is not part of the normal operation of the Web server.

>You can code in Application_End to discover the ShutDownReason - see http://stackoverflow.com/questions/5443356/how-to-tell-why-an-iis-application-pool-is-recycled (second answer)

Thanks