My Moultrie D40's will say "memory card locked" in the display, if it is locked. I have one or two memory cards that are a real pain, because the little slider thing moves too easily and it takes about 10 times inserting it before I can get it in there without locking it.
The Tasco's I just got aren't so nice. I had one out for a week and went to check it yesterday. It was on a deer trail with plenty of fresh tracks. Got to it and it had zero pictures. Finally figured out it was not because the camera wasn't working, it was just that the memory card was locked.
