Yes ! You're surfing a slug right now. Or to be more precise a NSLU2 .
A little NAS which enthusiasts transformed into a full blown Debian box. Ok you might miss the keyboard and the OpenGL support for all your ego shooter delights, but beside of this it does what a computer is supposed to do.
It's also quite tender to my electricity bill which which I can't seem to get from raising higher and higher.
Of course you can not install an Apache Server. Well -- actually you can, but the result isn't too impressive. Also any larger PHP or Ruby/RAILS backend just eats up all your memory and CPU-Cycles faster than you can say "ups.." but with Lighttpd I'm not even touching the swap partition. I guess the real bottle-neck is the DSL-uplink for now.
So ... welcome to my slug...O.