I know I’m late to this party, but it deserves to be repeated. Nobody can fully install or update Windows XP or Vista for at least a few days. It’s a worldwide security problem: security updates can’t go through.
Of course, Microsoft’s blunders can also cause the vast majority of PCs in the world to restart themselves and forcibly close all programs whenever they want.
One of the many reasons I’m glad to be using a Mac. I actually decided to make the transition full-time, at home and at work, when XP SP2’s updater restarted my work PC (because I wasn’t around to click “Restart later” within 5 minutes) and closed 17 terminal windows, causing me to lose at least a half hour of productivity the next morning. Goodbye, Windows!