It can be argued that Microsoft’s main focus with Windows Vista was security. While sceptics try to claim that there has not been much improvement, Vista does appear to be Microsoft’s most secure OS to date.
Nevertheless, it’s far from perfect, and not only on the security front. While many tests show that Vista outperforms XP on some high-end computers, the average computer system does not run Windows Vista as well as it does Windows XP. This will of course change as the average computer becomes more powerful and as Microsoft tweaks the operating system (SP1 already offers some help), but the fact of the matter is that Vista is recognized as a slow operating system.
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