I re-installed Windows XP on my Sony Vaio yesterday. I have say that I’m very impressed with the speed of the new OS so far. I originally did an install right over Windows ME, which was a mistake. A clean install, as painful as that can be, seems to be the way to go with it. At times, especially when Web surfing, it makes my Mac OS X machine, which is comparable in speed and configuration, look sluggish. Having said that, I suspect that this is because Internet Explorer for Mac OS X isn’t the fastest app on the planet.