K12LTSP/K12linux version 6.0 has been released. This is a major over-haul, with a huge number of improvements. Read all about it at http://k12ltsp.org
With the passage of the Children's Internet Protection Act, filtering is something that most schools and libraries are going to have to deal with. MESD has been using a commercial web filter for the last two years. Recently we switched over to squidGuard and are very pleased with it. SquidGuard is completely free, is distributed under the GPL license, and is quite competitive with the expensive proprietary solutions we were using previously. We have posted simple installation and configuration instructions, as well as our blacklists, at http://squidguard.mesd.k12.or.us .
We've been doing a lot of work with OpenLDAP. This documentation is very outdated, but it may still be of interest:
We've started playing around with Linux-based routers. Take a Linux box running Squid & DHCP, slap in a WAN card, add a few IPCHAINS rules and you have a pretty sweet, inexpensive router. That's the theory anyways. If it works well in practice we may build more of these rather than buying new routers. The first one has been working great.
Slides/documentation from recent presentations:
Getting Started Guide
System Administrators' Guide
Network Administrators Guide
Administrator's Security Guide
Gimp User's Manual
Gnome User's Manual