CWmike writes "More than one in every three new PCs is downgraded from Windows Vista to Windows XP, either at the factory or by the buyer, said performance and metrics researcher Devil Mountain Software, which operates a community-based testing network. 'The 35% is only an estimate, but it shows a trend within our own user base,' Craig Barth, the company's CTO, said. 'People are taking advantage of Vista's downgrade rights.' Last year, Devil Mountain benchmarked Vista and XP performance using other performance-testing tools and concluded that XP was much faster. Barth said things haven't changed since then. 'Everything I've seen clearly shows me that Vista is an OS that should never have left the barn.'"