This looks quite good, but I could not see if I am able to replace all software on that device, it speaks of several proprietary software items, so I am afraid I have to rely on them for my software.
I am too much software developer and too much GPL to accept not being able to replace all.
Thanks for the tip anyhow.
I recommend TonidoPlug. It runs debian squeeze and comes with complete ssh. You can also boot it directly from 2.5 inch SATA disk and install additional packages using apt.
It has good reviews in amazon as well: http://www.amazon.com/TonidoPlug-Network-Attached-Storage-Pe...
All in 5 watts of power.
http://www.tonidoplug.com/