My flatmate has been having problems with her 700 MHz iBook/Combo Drive lately. Her screen in particular has been going out - it will switch from vertical lines (solid vertical lines, not moving ones) to general fuzziness to heavily pixelated appearance. This happened about three weeks ago, but then went away, just returning tonight. She's already had the screen replaced once, about nine months ago. I browsed the Apple discussion boards for a bit and the general consesus seems to be that something is wrong with the logic board/graphics chip. Has anybody else experienced this problem? Is there anything she can do herself, or should I tell her to take it to the Geniuses? PS - A little icon appears at startup/restart that shows a folder with a question mark in it. What does that signify? Thanks much.