I've been road testing this webook over the weekend. (Major geek alert here.) I blew Windows XP out of it and replaced it with Ubuntu Linux.
I was always a Linuxphobe, thinking it's a foreign language which is a lot more convoluted than Hebrew, but I went for it. Ubuntu's actually kinda elegant, coming with Open Office, an MS Office-compatible suite, and just about every basic need (Firefox, Evolution Mail, a nice handful of games, media players, etc.) - all included in the free package.
Then I went to install a couple of things (Skype, Java 6, GoToMyPC) and get a couple of other things working (the internal mic) and that's when the Hebrew began. As Linuxians know, most of these adjustments involve opening the terminal and using your vast knowledge of the Linux language. Or as I did, look up your dilemma on Google and copying and pasting everything, bypassing any possibility of learning this.
The single most beautiful thing about Ubuntu is its ability to find and configure a wireless printer in seconds. It takes quite a while with Mac (and you have to have the printer drivers to begin with) and you have to manually do it in Windows.
Getting back to the Mini itself, it's pretty cool. I'd say it's built a little more solidly than the EE-PC which started the whole sub-subcompact subculture. It comes with a bunch of things they don't heavily advertise like an SD card slot for more storage, a built-in microphone, and a keyboard which feels like it was the result of impacted wisdom teeth. F'rinstance, the apostrophe's next to the space bar. This one which I'm writing this on has the built-in cam, so Skype worked pretty nicely. The mic sounds a little like a Fisher-Price walkie talkie.
Even with the tiny keyboard, Dell still managed to include a Delete button and a right-click button, something MacBooks still seem dead set against.
I'm enjoying it. You can save a bundle on one if you buy it from Dell's outlet and if someone posts a 20% off code at Fat Wallet.
And for God's sake, I'm not even thinking about hacking Leopard into it to make a MacBook Nano. No sir, not me. Wouldn't dream of it. And I will not let you know how it turns out even if I did. Which I won't.