Hey, My cam has been doing the exact same thing. I only put 4 AA batteries in it and it killed them in 5 hours taking 2700 pics of nothing. Done this twice now. I set the camera up in my room to find out whats wrong with it, I find soon as the camera is triggered it will continue to take pictures even when their is no more motion in front of the camera. If I have it set up to take pics every 15 seconds, it will continue to do that until it kills the batteries.
I bought this camera + a bushnell trophy xlt scope from Cabelas at Xmas time. Did you buy the same package? I think these are the 2009-2010 model that bushnell had problems with. I had mine for 2 months before I even tried it out, Can't return it to Cabelas now. I'm going to look into taking it to the warrenty center in Richmond hill Ontario.