While Bill Gates claims that Vista is selling well, the big question is how many customers out there are requesting software with Vista specific technology. The answer came in a recent survey of developers claimed that less than 1 in 12 developers were actively developing software that was Vista-specific.Is the continued existence of XP causing this?  Or is it something deeper?   The answer probably has a lot to do with both.”None of our customers are saying, ‘G******it, we need those WPF controls now!'” said