I finally got around to installing the Windows Vista Beta 2: The biggest, slowest Windows yet!
I shouldn't be too harsh, I know they're designing it for use on better hardware than mine, but Vista was noticeably slower than XP. And the thing that never ceases to amaze me is that Windows takes an entire CD (and now a DVD, 3.2 GB) and when the install is done all you've got to show for it beside the basics is Wordpad.
Linux distros, on the other hand, can be as small as a single CD and still come with everything you need and more: an office suite, a photo editing program, programming tools, and easy access to everything else, Free. Not only that, but when a new release of your favorite distro comes out the release notes often include mention of significant performance improvements.