Probably not compatible with Leopard
The review doesn't deal with the Apple Mac world at all, so I thought I'd post my experiences. I have absolutely no use for the software suite, since I bought the drive to use with Apples Time Machine utility. I therefore didn't install any of the software, and I formatted the drive using Apple's Disk Utility. I bought the drive because I thought it was neat that I could connect using Firewire, and I'm running out of USB ports.
1. I found that the drive was quite noisy, constantly clicking and whirring, but I could put up with this background noise and would eventually get used to it. No drives are utterly silent.
2. The problem was that the hardware switch that's designed to interact with the software, and through that with the system, can't be deactivated. It insists on attempting to communicate with my Leopard system and Leopard interprets its signal as a shutdown request. I get a brief message asking whether I really want to shut down the system, but if I fail to click "cancel" the system just goes completely dead in the blink of an eye. There's no recovery, and the Mac doesn't even know that anything has crashed. It just shuts off.
I queried the technical support staff to see if there was some way to deactivate the switch, but apparently not. (I should mention that I'm not physically touching the switch at any time.)
Anyway, this is a rather serious incompatibility issue. I don't know what happens when I use the drive in USB mode, and haven't tried that yet. I definitely don't want to install the software, and generally consider the attempt to link a hardware switch with the OS to be a failure... a big failure. When I question Apple tech support they'd never heard of anyone experiencing this sort of odd shutdown behavior, and it took quite awhile to track it down to the Maxtor drive. I also might be able to use it connected to my Airport Extreme Base Station, via USB... but it's really incompatible with the Mac's Firewire port.
I don't know why one would ever need a physical backup switch like this anyway. It seems to be a gimmick, and it's obviously got a few kinks.