Hi all I've seen reports that earlier tiBooks suffered from screen marking as a result of contact between the keyboard and the screen. 'Fraid it's a problem on my new OneGigaHurts 'book too. Not grease marks - small parallel lines that look like marks made by the edges of some keys - they are in pairs and the width between them is the same as that between the keys... Off I go to get a piece of chamois... what else do people use? Gerry