Im having the same trouble with my apps where the session seems to be timing out way too early. In one case i have set the shopping cart session to 40 minutes with the following line in application.cfm - sessiontimeout="#CreateTimeSpan(0,0,40,0)#" - then i put something into the cart and wait ten minutes and the cart is empty (gone). Can anyone tell me where to begin looking for the cause of this?