Up to 60% of the code in the new consumer version of Microsoft new Vista operating system is set to be rewritten as the Company "scrambles" to fix internal problems. Note: this is code in the CONSUMER VERSION, not in the entire OS. A lot of people on /. are taking that the wrong way.
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Sounds like a HUGE task. They're adding people from their Xbox team to Vista. That sounds like a bad idea to me, it's a general rule in software development (vocalized in the book, The Mythical Man Month) that adding more people to a project nearing completion tends to slow it down. See my signature.
I guess we'll see how it goes!