For PC lovers, it’s October 22nd that’s circled in your calendar. But that’s not the only major OS that’s launching this fall. This week at Apple’s Worldwide Developer’s Conference in California, the company announced that its long awaited OS X Snow Leopard operating system would be shipping in September, undercutting Microsoft’s own debut by a solid month. Apple already told us that Snow Leopard was less about being a completely new OS and more about refining the innovations in OS X Leopard, but we never imagined