Could problems with this script encountered by some people be by any chance firmware related? I was playing yesterday with my gf's N9, on which she has a slightly different firmware (we both have pr 1.2 though the exact firmware name vary), and could observe some differences compared to my N9 - more "greenish" tint to the screen color, faster rotations of the home screen (with homescreen settings app) - so it seems firmwares vary slightly IMO.