Trustix Secure Linux version 3.0 is out.

Server Elements - these guys produce NAS Lite, which is a mini-OS based on Linux that will turn a PC into a dedicated NAS device.

Window Maker have released version 0.92.0.

Hula Server - Hula. A promising looking Open Source messaging and calendaring server. I heard about this on LugRadio, which is an ace podcast.

Comparing security on Windows and Linux: "A more objective method of rating security is to track the number of bug fixes issued for a particular software suite. When compared to Linux, Windows appears to be more prone to flaws by this measure. Recent U.S. Computer Emergency Readiness Team (CERT) vulnerability metrics reported 250 episodes for Microsoft Windows, 39 of these having a severity rating of 40 or greater. With Red Hat Linux there were only 46 episodes, of which only with only 3 scored over 40. There are thousands of reports that compare the two operating systems but reports like this by an independent government body, on the relative number of critical flaws between them, should be given greatest consideration."

Crash Recovery Kit for Linux - kind of a mini-knoppix with a few useful tools built in, I think.