I have had this problem with my cuddeback (older 3.0mp model). Maybe I only notice it when it snows, but I will get a lot of tracks in front of the camera that the camera misses or wont trigger, see pic for example. This was the first picture taken after it snowed that night, look at all the tracks in front of the camera that were there before the pic was taken, how did the camera not trigger??

http://im1.shutterfly.com/procserv/47b7cc25b3127cceb16aa87c51ea00000026108UbuWTdu3I

Thats different, don't know what to tell ya.

All I can say is I getreallyticked when there are big tracks in the snow in front of the camera and it doesnt get a picture of what made them....

I've got a cuddeback myself,as far as i know i haven't missed any pics yet, the snows on the ground now so that will tell me for sure then.