Nearly 25 percent of those who responded to PC Advisor's Windows Vista survey have upgraded to the new OS, just two months after its UK consumer release.

Much of the discussion on our Windows Vista forum in the build up to Vista’s UK release suggested the vast majority of PC Advisor readers were sceptical of Microsoft’s new OS and were planning to stick with their current versions of Windows.

But a quarter of those 2,766 people who responded to our survey have already upgraded, albeit with a few teething problems. Eleven percent of respondents said they were running Vista on a new computer, with an even split of users who were impressed and unimpressed with the OS.

Another 4 percent said they’d upgraded their current computer, and were pleased with the upgrade process. However, the same amount had upgraded but experienced problems.

Even more worrying for Microsoft was that 5.5 percent of respondents had installed Vista but then opted to dump the OS in favour of their previous Windows XP installation.

Backing up our figures, Microsoft has reported strong consumer demand for Vista since its launch in January. It said more than 20 million licences were sold during the first month on sale, and that Vista is selling twice as fast as Windows XP did when it went on sale in 2001.

However, despite the promising uptake, the majority of those who responded to the PC Advisor survey remained sceptical of Vista. Nearly 33 percent said they “were happy” with their current OS, while another 22 percent objected to Vista on the grounds of its high price.

For the full results of PC Advisor’s Windows Vista survey go here.

See PC Advisor's review of Windows Vista and discuss the new operating system with other readers in our Windows Vista forum.