A good OS for file serving?

[Mista-X]

Ok, constantly running out of disk space...

I want an OS that is stable and won't take up much room. I don't care if it's pretty or ugly, and I don't care if it takes some work to set up (as long as it's not overly complex).

I want it to run windows sharing, as well as web/ftp.

The less space the OS itself takes up, the better.

[frubsen]

i've been using freebsd for a few years now running a file/web server. pretty easy to set up if your good with text based installations. the base install is only a 100meg or so.

[Digiital]

ClarkConnect for me. Easy to maintain and pretty small size wise.
Web based admin for file sharing, you can do WINS if you want, FTP/WEB bla bla bla.