"This tutorial will show you how to setup greylisting with Postgrey and Postfix on Debian. Greylisting will not replace spam filtering software like SpamAssassin but it will serve as a powerful first hurdle for spam thus reducing the amount of spam entering the system at all."

As its name suggests, Damn Small Linux (DSL) is a damn small distribution! The ISO is just 50MB and it fits on a business card CD so you can carry it with you wherever you go. It also acts as a Live CD so you can run the system without installing it on the machine. The idea is to access your Linux environment from any computer, thanks to a tiny CD that would fit in your wallet.

"We are very pleased to announce this release, the first major update to cairo since the original 1.0 release 10 months ago. Compared to cairo 1.0, the 1.2 release doubles the number of supported backends, adding PDF, PostScript & SVG backends to the previous xlib/win32, and image backends."

Sun was quick to deny published reports today that it plans to open source Java in the next few months. The company is working on the project, but any transition to open source is closer to a year away. Simon Phipps, chief open-source officer for Sun, made a comment he said was misconstrued at the Open Source Business Conference in London earlier this week concerning Sun's efforts to release Java as an entirely open source project.

Callisto, an effort from Eclipse Foundation, which bundles ten projects in order to ease the integration with Eclipse, has been released. "Callisto is about improving the productivity of the developers working on top of Eclipse frameworks by providing a more transparent and predictable development cycle. By releasing 10 projects at the same time, the goal is to eliminate uncertainty about version compatibility and make it easier to incorporate multiple projects into your environment."

Learn how to use the Dojo toolkit to build enterprise SOA clients for Java Platform, Extended Edition applications, and the the JavaScript Object Notation–RPC to invoke server-side Java objects.

CodeWeavers is in early testing with CrossOver Office for Mac now and plans to release a final version of the software in July or August. Wine is a compatibility layer, not a true emulator, so it works with only some Windows programs. Developers at CodeWeavers and others on the open-source Wine effort have to work on each program they want to make compatible.

A computer user is suing Microsoft over the company's Windows Genuine Advantage anti-piracy tool, alleging that it violates laws against spyware. The suit by Los Angeles resident Brian Johnson, filed this week in U.S. District Court in Seattle, seeks class-action status for claims that Microsoft didn't adequately disclose details of the tool when it was delivered to PC users through the company's Automatic Update system.

"Git is the open source revision control software that Linus Torvalds developed to help manage Linux kernel development. You can download it yourself and use it for your own kernel hacking - or for software projects of your own. This article shows you how to get started hacking Linux with the Git tools."

In a mail to the FreeBSD hackers mailing-list, a very detailed request is made from Christian Zander at Nvidia, concerning several missing features in the FreeBSD kernel. In order for Nvidia to provide improved OpenGL performance and SLI support in the future for FreeBSD/i386 and FreeBSD/amd64, several important tasks needs to be completed.

"Over the years, I've had a number of people asking me what I believe the problem was with further migration over to Linux by the public at large. To be frank, I don't believe that there is a simple answer to this. To me, there are a number of factors that play a role in keeping Linux out of the mainstream limelight" writes Matt Hartley in his opinion piece.

A series of patches has been proposed on the Linux kernel mailing list earlier by a team of engineers from Red Hat, ClusterFS, IBM, and Bull to extend the Ext3 filesystem, adding support for very large filesystems. After a long discussion, the developers came forward with a plan to roll these changes into a new version: Ext4. LWN covered the changes as well as the arguments put forward for a new filesystem a few weeks back.

Office 2007 is running late. Microsoft officials acknowledged on June 29 that the company will not meet the October 2006 business-availability target to which it committed in March of 2006. At that time, Microsoft officials said to expect retail availability of Office 2007 to be some time in January 2007, so as to coincide with the Vista launch. But on June 29, Microsoft revised its schedule. Now Microsoft is promising that Office 2007 will be available to volume licensees "by the end of year 2006", with retail availability in "early 2007". This does not stop MS from pondering about Vista's successor, though.

OpenOffice.org 2.0.3 has been released. It contains performance improvements, improved compatibility with Microsoft Office formats, support for Intel MAcs, and much more. Release notes, download page.