Linux, the scarcely decade-old open-source operating system, looks to have reached a sort of critical mass and has entered into an awfully busy period in its development. There's a major kernel update around the corner, an audacious licensing challenge with which to contend, and a rush by virtually every major enterprise IT vendor not located at 1 Microsoft Way to jump on the Linux bandwagon or help take up the reins and drive its development.

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