You might recall I've been beta testing the Zonbox from Zonbu. It's a very good Linux box, uses maybe 10 watts, $99, and $13 per month.
The latter includes application updates, and remote storage.
I've been using it for heads-down customer service on craigslist, and it works well, even on this big 1920×1200 display. No need for other applications, it does the job.
No disk, just a 4 GB compact flash card. I popped the beta one, installed the production one, and everything worked just fine. All data transferred fine, even application defaults and FireFox addons.