A security researcher has released zero-day code for a flaw in the Linux kernel, saying that it bypasses security protections in the operating system. The source code for the exploit was made available last week by researcher Brad Spengler on the Dailydave mailing list.

PacketFence press release: PacketFence is a fully supported, Free and Open Source network access control (NAC) system that runs on Linux

PHP 6, the next major revision of the popular Web application development language, looms on the horizon and promises many changes. Learn what’s new and what’s obsolete and how to prepare your code for tomorrow.

iRedMail is a shell script that lets you quickly deploy a full-featured mail solution in less than 2 minutes. Since iRedMail 0.5, it supports Debian 5.0.1 and Ubuntu 8.04 & Ubuntu 9.04 (both i386 and x86_64). iRedMail supports both OpenLDAP and MySQL as backends for storing virtual domains and users. The OpenLDAP backend of iRedMail allows you to integrate all kinds of applications.

Aleksey Bragin announced the 0.3.10 release of ReactOS, the Free Software replacement for Microsoft Windows(TM).

It features a new Universal ATA driver as the default disk driver that allows support for Serial ATA and partitions greater than 8GB.
Also there's a lot of work done on increasing USB compatibility.

There's no question that Ubuntu dominates the desktop-Linux world.  With commanding market share and a huge user community, it's by far the most well supported and documented open-source platform in the desktop world.  On servers, however, the situation is different - and Canonical needs to address it if it wants to become a real player in the server market.

In Windows they are used for a long time already, but most Linux-users probably don't even know that their system supports them too. Access Control Lists (ACLs) extend the regular permissions we all know with the possibility to give permissions for specific users/groups.