There is a lot of potential in the development of the OVF standard, especially since it supports the ability to create open environment virtual machine/virtual appliance content. See how the toolkit for Open Virtualization Format standard (OVF), an open, secure, portable, efficient, and extensible format can help you package and distribute the software you want to run on virtual machines.

Adobe AIR is a technology that lets you run Internet applications on the desktop. With AIR you do not need a browser to run such desktop applications. This tutorial explains how you can install Adobe AIR 1.5.1 for Linux on an Ubuntu 9.04 desktop and how you can install AIR applications.

http://www.howtoforge.com/installing-adobe-air-1.5.1-for-linux-on-ubuntu-9.04-i386

This article continues the series of articles on Fireall Builder, a graphical firewall configuration and management tool that supports many Open Source firewall platforms as well as Cisco IOS access lists and Cisco ASA (PIX). This article demonstrates how you can work with IP Service object in Firewall Builder.

http://www.howtoforge.com/using-ip-service-object-in-firewall-builder

Here's your chance to talk to Dr. Erich Gamma. Feel free to fire away on Eclipse, Java, JUnit, the Rational suite, the Jazz site, or about Dr Gamma's book called Design Patterns: Elements of Reusable Object-Oriented Software.

Separation of concerns is a concept in object-oriented (OO) software design that allows you to build more-modular applications. Modular applications are easier to maintain and add new features to. PHP's OO language features allow you to apply design concepts to build more robust, maintainable applications.