Vista is buggy. That much is obvious to anyone who runs it but it has been improving in stability as the patches are rolled out. However it runs extremely slowly too and this became startlingly obvious to me in the last few weeks as I have been testing browsers on different platforms.
It turns out I can run Internet Explorer 8 faster on my older Mac than I can on my newer Vista machine (both 2ghz Intel core duo with 2gb ram)!
However, when I installed Internet Explorer 8 on my Vista laptop, IE8 completed the test in 19,906.4ms.
Vista is more than twice as slow as XP running in Parallels on my Mac.
Vista is a huge embarrassment for Microsoft. They spent a fortune developing it and you speak to any Microsoft employee now and if the topic turns to Vista they get visibly uncomfortable. To the extent that Microsoft are now starting to talk up Windows 7 with Bill Gates calling it a big step forward. It needs to be.