I'm a very experienced computer user, having started with an MITS Altair back in the 1970s and having had almost everything else since then.I bought a Canon LIDE 50 to replace an aging Astra UMAX scanner.I've been able to make the Canon work mostly with Windows XP, although its supplied software is terrible.I have been completely unable to make this piece of junk work with my Macintosh. It just doesn't work. Period. Canon's support has been useless, and now that I've upgraded to Leopard, I'm told that by Canon that they WILL NOT EVER SUPPORT THIS PRODUCT on 10.5 or newer operating systems.So Canon, kiss my backside. In some years, I spend up to $2M on computer systems on behalf of my employer and clients. You'll never see a dime of it.Have a nice day.