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Even in the best of times, businesses don't like upgrading their PC operating systems. The process is expensive and time-consuming, and usually demands retraining a technically challenged workforce. And now Windows 8 threatens to make workplace system swaps even less attractive than before. Between the removal of the familiar Start button and the addition of a decidedly non-intuitive tiled interface, Windows 8 has struck fear in the hearts of IT managers worldwide. As a result, few businesses appear to be planning Windows 8 upgrades.