This trend has to have held true at a similar point-in-time in XP's launch lifecycle as well. Individual purchasers of Windows OS seldom are the first to show enthusiasm about spending the retail price for a new version. Those who will own it will be the ones who would have had it handed down the OEM path.

The survey should focus on corporate software purchase decision makers at this point in time to get an accurate pulse on the adoption sentiment.

Secondly, this survey should be conducted on these "US adults" (assuming that most were responding from a personal purchase/use context) no earlier than a year from first retail release. So, do this survey around Christmas this year and then see what it says. Not to mention, sentiments should be dull at best considering the product complexity introduced, and the poor marginal benefit perceived of Vista over the incumbent XP.