linux
Most Linux users understand the ups and downs of all OS possibilities. Linux is lacking in some areas (ie. gaming and ease), but is slowly making it's way into the home. It has the potential to be more stable and secure if you know what you are doing with it. I have found a happy medium. I use Slackware Linux 9.1 for servers and web browsing, MacOS 9.1 for graphics, and Windows XP for gaming.
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