Thats it! It's Sleeping to save the battery life...then it has to wake up[>:]

http://www.chasingame.com/reviews_moultrie.htm#moultrie-ww100
"The “Sure Shot” function that Moultrie has incorporated into this camera is a pain in the foot. It takes two motions to set it off. The first motion does nothing but if the cam senses a second motion the picture will be taken in under one second".

You could try placing the camera slightly farther back from the feeding area in hopes of catching deer that are just getting out of the picture framebefore the camera's awake and ready to take a pic.