Jeff Bezos, sitting in an office in Seattle, is basking in the credit for Amazon.com's new Kindle e-reader. But who really deserves credit for it? Lab126, an Amazon subsidiary in the heart of Silicon Valley -- Cupertino, Calif., Apple's hometown. With former Apple and Palm employees running the quasi-startup, some have speculated that Lab126 might be coming up with an MP3 player or handheld computer. Instead? The Kindle, which many have dinged for a design that hardly matches the iPod or Treo.