If you're part of the dwindling group still using Windows Vista, you'll have to wait until your next upgrade to take IE10 for a spin -- Microsoft has confirmed that the latest version of its browser won't run on its last-gen operating system, either in developer preview form or when the final software ships. While it's tempting to interpret that as an attempt on Microsoft's part to put the widely loathed Vista in its past, there's actually a precedent for this -- remember that Microsoft cut off XP support when it unveiled IE9. As a Microsoft rep told Computerworld, the company would rather not have to develop software for a lowest-common denominator. At least, if you do have to stick with the newly minted IE9, you can be sure you'll be in good company.

http://www.engadget.com/2011/04/14/m...s-of-ie9-user/