I had been using a Maxtor 80 GB drive, but it kept falling off my Mac and my PC without apparent reason. I took it to bits but could not see any problem such as a dry joint. So I bought another Firewire HDD - on the recommendation of someone on this list I bought a LaCie 120 GB model. Not only is the build quality (at least of the case!) superb but it worked immediately straight out of the box and continues to do so. I use one partition as a scratch disk for Final Cut Express and it works fine. Thanks to whomever it was who recommended it. Alan