The other day I was takin pictures and it was workin fine. Then all of the sudden I took a picture, and it took like regular, but when it shifted it from the viewfinder window to the thumbnail in the upper right corner, it was just a black image. When you go to find the pic in the gallery its just a blank tile. Now when I take a picture it just takes like regular, but the camera freezes up with the picture still on the screen. Anyone know whats up?