I have had 4 g3's over 2 years --- each has had logic board failures multiple times (Apple repaired them each several times and then replaced them with an upgraded version). The G3 900 mhz that I now have has had the logic board fail once AND this one has developed a crack in the front right corner. I believe that those of us who carry our ibooks around with us a lot and use them on our laps and are likely to lift them one-handed are far more likely to experience logic board failures than those who leave their ibook sitting on a table most of the time. The problem appears to have something to do with stresses created by handling the unit. -pam On Mar 2, 2005, at 9:32 PM, Todd Doerpinghaus wrote: > I hope I'm not losing my mind. I thought I remembered > reading some posts about cracks on the corners of > ibooks. I searched the archives but had no luck. > Were these cracks caused by knocking the book on > something, or was it something that just happened? Is > it common? My 900mhz g3 doesn't have any but we have > a few g4's that are starting. Thanks in advance. >