I have the opportunity to purchase a 14" 1.42 mhz iBook with 1.5 gb ram, two-finger scrolling, etc., etc. I am apprehensive only because it has never had any major repairs, and the original owner neglected to get Applecare for it. We presently have two iBooks from the prior revision (14" 1.33 mhz) that have both needed logic board replacements. They now, of course, both perform splendidly! I am just concerned about trading a known-to-be-good iBook with a new logic board for a newer (and faster) iBook with the original logic board. (It won't be a trade, exactly, but if I get the new one, I'll have to sell off one of the others.) It may just be the luck of the draw that the two iBooks we already own have needed new logic boards . . . . or it may be a predictable failure with the 1.33 ghz that I don't need to worry about with the 1.42 . . . . or it may be a predictable failure with any iBook. I know no one on this forum is clairvoyant (as evidenced by our uniform lack of success in predicting iMac and Mac Mini revisions! ). I'm just wondering if anyone has more knowledge than I do about the history of these two iBook revisions . . . . Thanks!