It only infringes if the owner of the patent raises a fuss. So far, I've heard of SCO as about the only ones to do so. There may be others, but I've not heard much from them.
MS may very well have the who had prior art backwards, though. We'll see.
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"The way I see it as soon as a baby is born, he should be issued a banjo!"- Linus Van Pelt
UNIX - Not just for Vestal Virgins any more