The Windows operating system, by all rights, is the dominant platform in the world; but it's also likely the most complex. That complexity, according to both analysts and industry pundits, is exactly why Microsoft can't move or innovate at the speed such a mammoth organization should be able to move. Given the delay of Vista, and the fact that it has 50 million lines of code--nearly 40 percent more than the predecessor system, XP--it's pretty obvious Windows isn't going to get any quicker any time soon.

For more on what's slowing down Windows:
- read this article at The New York Times

PLUS: Gates gives his take on Windows development. Article