60% of Windows Vista Code to be rewritten

This is the sort of thing that worries me about becoming a larger company. Although I'm looking forward to having more people and resources, the prospect of larger and larger problems and resource issues gives me the willies.

Here microsoft is hoping that the programmers that did work on the Xbox will improve the team on windows, because the Xbox did so well as a product.

I don't know that it's very good reasoning, but I can understand their sense of time-pressure. Windows Vista is years late already, and they can't afford more delays, unless they want to try to resell XP for another two years.