Macolytes around the world were buzzing this week with news that an online hardware vendor called "Psystar.com" is selling a US5 PC called the "Open Computer" that runs the Macintosh OS X Leopard operating system. In fact, for about the same price, you can buy the machine with Windows or Leopard installed -- or buy it for 0 with the open source Linux operating system. For Mac lovers accustomed to paying the Apple premium, this would be a major breakthrough -- at the very least, a cheap source for the second or third computer they can't afford at Apple's prices.