For one thing, how do you know that a Windows port would be easy for Microsoft? And what would be the incentive? There is absolutely no reason for Microsoft to do that, because AMD is a perfectly good leverage tool. PPC would be no better than AMD at least. And without Microsoft, there's no mainstream OS, and thus no market. I don't see a lot of people clamoring for PPC Linux laptops when x86 seems to be doing just fine.

The fact that they haven't checked whether the shuttle's vital parts are glued on tight or not is more than enough reason to cancel the launch.

The window COVER is meant to protect the shuttle window before launch. It's not a exactly a vital component, as it would be removed before launch anyway. It's not "glued on".