I saw some one post the other day about the screen dimming problem, tonight i noticed the same thng, every time i waitied a second between typing the screen dimmed a bit, however ive just discovered the sensors are in the speakers.... the light is coming across from an angle at my side and eveytime i move my hand to the keyboard my sleeves dimming the screen ..... so in case the problem wasnt solved .. it is now LOL ,,,,, although im probably well to late for you lot lol!