If you've ever installed Microsoft Vista yourself (or looked around in the hard drive of your brand new box), chances are you'd be surprised to find that it's a hog for disk space. An install of Vista can take up anywhere from seven to fifteen (!) gigabytes of disk space, which most people can eat because hard drives these days are typically in the hundreds of gigabytes. Still, that's a hell of a lot of binary; maybe if you've installed a load of applications and patches over a year or so, I can see that, but when you factor in everything …