Microsoft's emphasis on improvements to security features in Windows Vista may have undermined business adoption of the OS, as many business and enterprise customers are still holding off on upgrading to the OS nearly a year after its release to them.

Microsoft spent a good deal of time and money to ensure Vista's security after Windows XP and applications running on it proved susceptible to devastating worms like Blaster, Slammer and MyDoom. Though Microsoft released Windows XP Service Pack 2 to remedy some vulnerabilities, the company decided that security would be a top priority for the next major Windows release, said George Stathakopoulos, general manager of Microsoft's Response and Product Centers.

Microsoft made a crucial mistake in pushing and marketing something that many feel should be an inherent part of an operating system. Seems to be telling customers a feature of the OS was not right in a previous version and promoting that it's been improved in the new one. Full article