My WD 1 TB 2.0 USB external is only about 2 years old and is causing my iMac (10.4.11) to crash. It has all my iTunes and other files. First off, I was told by the iHospital to change my USB wire (which is USB to mini). I had one laying around and tried it, but the drive is still causing issues. I even ran Clam Xav on it and had no viruses show up. Now, I checked USB wires that look like they might work, but at $15-20, I'm not sure I want to do that and the problem continues. Now, if I do get a new external (which has to USB 2.0), should I get a regular drive with a power supply or shoot for a small portable one? Would iTunes run on the smaller drive? Is it even a recommendation?