Steve Jobs first announced Mac OS X 10.6 (Snow Leopard) was in development at Apple's Worldwide Developers Conference (WWDC) in 2008. It was a chance for Apple to take stock of where it was with OS X. There would be no major innovations, but plenty of refinements: it would install quicker, take up less disk space, and the user experience would be improved through Apple's attention to detail. Fast forward to WWDC 2009, and the version of Snow Leopard being prepared has everything Apple promised, and more. Refinement rather than revolution, then, is the watchword for Snow Leopard. We've picked...