@Both previous AC's
Swapping the drive in this NAS is not for the faint hearted and with the lack of a Lacie community and specialist recovery tools it is not a 5 minute job. Linkstations with their following and backup make this easy but not for Lacie, well not when I tried anyway.
The Icy-box mentioned is only 10/100 and will have a deathly slow CPU in it, the Lacie will out perform this markedly even on a 100meg swtich, the icy-box is cheap for a reason.
How do I know this? Well I have have several generics NAS' (much like the icybox), 2 Lacie Etherdisk Minis and 4 different linkstations, The generics were sold on after I realised they were slow and not stable, the Lacie sold on when I realised I was stuck with the disk size, all linkstation were upgraded with bigger disks and I still run two upgraded ones now.
Sorry guys appliance NAS' are a minefield.
The only things I can see this failing on is the lack of expandability (can't attach a USB disk directly to back it up) and the lack of a built in print server. The price will drop rapidly in this competitive market.