I feel really dumb for letting this happen on both my original 3DS and now my 3DS XL, assuming the problem would be fixed in the latter case, but the bottom screen still causes scratches to the top screen. Or, to be more accurate, dirt can get stuck between the screens and it scratches along the outline of the bottom screen. This probably won't be an issue for most people if you don't carry your system in your pocket but for those of you who do, either get a screen protector or keep a cloth in between the screns. That is what I'm doing now.