I just purchased:
which is a dual 1gighrtz with 1.5gigs of ram and 10/100/1000 nic ...
but if I am reading right.. it only supports ata66... Does this make any sense? Hopefully my source is wrong.
Why would you have a 1000mbit NIC and only have ata66? Doesn't seem right.

Am I off? because I really believe ata100 would provide a far superior perforance boost... right?