Zenserver is a server distribution based on Zenwalk, which is a Slackware derivative.
Zenserver features the 188.8.131.52 kernel with the GRSecurity patch, lighttpd+phpfcgi setup out of the box, postfix, mysql, and plenty of other things. For ease of use, ZSAdmin has been added to simplify systems administration. Numerous bugs have been fixed, and many minor and major features have been added since 0.1. It is still beta at this stage, but has most of the intended features added.
Check out the Zenserver Website for more information.