I just bought one of the GBA SPs with better backlight second-hand. The first game I tried was Mother 3 and I was quite shocked when I first moved the charakter (up and down), because the floor of the house got a lot darker. When I looked closer I noticed that it was because of the black horizontal lines on the floor, which left their imprint behind when moving. Of course I tried other games with it (also original cartridges) and when I looked at the right places I could always see the same phenomenon. I also tried Mother 3 on my DS (old version) and it showed the motion blur (i hope that's the right term for it) too, but it wasn't that noticeable because the screen is not so clear and bright. My question is if this is normal and happens with all GBA SPs and to what extend.