It doesn't look to me like there is anything in the picture at all. In other words I don't even think it is a picture but a problem with the camera. I sometimes get completely black pictures with some cameras but I can't recall if I've gotten any that were just all white like this one.

I'd say the 5 out of 50 isn't acceptable and I'd give them a call or return it to where you bought it. This isn't something that should be happening and isn't something that you are doing wrong.