Sorry to dig up an old thread, but I was actually wondering the same thing as the original poster.
However, for my home server, it would have to run iLife '06, and VNC. Basically, it'll be a headless media server and file server.
I understand that the minimum iLife requirement is a 733Mhz G4. But I just wanted to see if anyone has any experience with a lesser machine.
I would like to add a RAID card of some sort with support for RAID 5. I've lost a hard drive before in a RAID 0 (doh!), and am a bit paranoid now. So RAID 5 or 6 is a must. The more hard drives I can stuff into the machine, the better.
Also, should I be concerned that the power supply on an older machine might die? I understand that I can't put a cheapy PC one into it... I'm just wondering since this machine will be on 24/7.
Basically looking to do this as cheap as possible, but with Mac hardware, not PC's... I've already built a cheap PC media server, but I want Mac hardware because I would like to use iPhoto sharing.