[sanddrag]

I know this is a little off but while we are all telling about our favorite operating systems, I'll put in my vote for Macintosh System 7.5 It runs beautifully as a web server on a 8MHz machine (up non-stop for over two and a half months now) and as an e-mail server on a 16MHz machine. On it (even just the 8MHz one) you can play jigsaw puzzule, chess, wheel of fortune, and a wide array of other games, make advanced spreadsheets and graphs using Microsoft Works, and even surf the web! All with only 4mb of RAM! It is amazing how much the early Mac operating systems can do with so little resources. Running 7.5 on something like an LC 475, Macintosh OS is a firebreather!

And a little more back on the topic of linux, Debian Linux (and Apache) can quite successfully be run on a 16Mhz Macintosh SE/30. http://www.macconnection.net/ I just haven't had a reason to try it since MacOS 7.5 works so well.