> There are small/low-cost VIA Nano (amd64 capable) and Intel Atom > based systems available too, usually in mini-itx format.
I second that. Although Nano/Atom-based systems won't be as small as the Plextor/Thecus systems mentioned, they will be far more versatile. Check the following url for a review on a small and cheap(ish) atom-based system: www.silentpcreview.com/apex-mi008 If you mentioned the Plextor/Thecus because, like me, you have a sort of embedded/industrial system fetish, look at the following url: linitx.com/viewcategory.php?catid=113&pp=113 Personally, I'm planning on getting the Fabiatech FX5622 on that page.

