I was about to buy an NSLU2 but I ran into FreeNAS while doing a google's search. So I decided to give it a try since I had two old PCs laying around. First, I tried to install it in a Pentium 166MHz but for some reason the computer started to crash while booting up. My next option was a AMD Duron 800MHz PC with 256MB ram. The instalation went flawless. I used an old 3 GB HD for the system and a 80GB for storage. This software is rock-solid, so far I have transfered about 60GB without a hicup. Has anyone else tried FreeNAS???