Hi everyone, long time lurker, first time poster. Hoping you can help with a problem a friend of mine is having with his Macbook. The LCD screen on his Macbook has started to flicker quite badly, but the strange thing is this only happens when the mouse pointer is in the first 4/5 of the screen (i.e from the Apple logo to roughly where the Airport icon normally is). The RAM has been re-seated but not swapped out (yet). Our first idea was that the drivers for the graphics have somehow got screwed up, but he took it in the Apple store and the genius booted it from a USB hard disk with Leopard on and it was exactly the same. We also thought it may be a heat issue, as it gets gradually worse but as soon as the mouse pointer is moved to that last 5th of the screen it behaves normally. Very strange. Genius suggested logic board replacement but I thought I'd post on here on his behalf too see if anyone had any ideas before he went ahead and got it replaced... Any ideas? Thanks in advance.