suse. install in manual mode, minimum distro; use blackbox or windowmaker, mozilla. Put in 64M more RAM for 20 bucks. KDE or Gnome would be slow though.
My web server is a PII 233 using plone, apache, mod_perl, and mod_gzip, iptables, sshd, I haven't had any resources issues or complaints.
Comment on Re: (Very OT): Good Linux distro for very old machines