I’ve had some curious experiences with Amazon in the past — mostly good, but some pretty peculiar even if they turned out well in the end. My kindle just went flat, and when I went to plug it in, the cord disintegrated in my hands. No sign of wear or trouble in the past, and suddenly the white rubber just fell off the cord, leaving bare wire.
Being a nerd, I googled it, and it’s a known issue. Called customer support, and not only did they send me a new one for free, they also paid for next-day shipping. Outstanding.
Update: Incidentally, I’ve had it since February 2009. 2-1/2 years. So it’s not exactly under warranty. :o)