Just wanted to let everyone know my experience with WD's My Book Studio. Many people has serious issues with this drive. I bought one, and immediately upgraded the firmware to the latest version which is supposed to resolve many of the issues. Well, I only had it for a few days, and I am very satisfied. It is VERY quiet (much quieter than the Time Capsule hard drive), and is VERY fast (on a Firewire 800 port connected to a 24" iMac) and so far it appears to be reliable. The capacity gauge feature works as advertised as well. I think they really did the right thing with this firmware update. I am running this on Leopard 10.5.2. I can definitely see myself daisy-chain more of these on the 800 port when more space is required. I don't have a PPC mac, so no word on resolving problems on that side. I also didn't try to boot from it yet. Just thought you'd like to know. Thanks. Oded S.