We gadget nerds have to endure unspeakable atrocities in order to slake that early adoption jones: first-run gear shipped DOA, buggy pre-release software, and months of waiting after a product leaks only to be greeted by a jacked-up price premium at launch. So we feel your pain, original Kindle owners, after Amazon announced a major firmware update that brings native PDF support to the 6-inch Kindle 2 and DX readers with the promise of a staggering 85% increase in battery