I got my package today. I ordered one, and there was only one in the package! I was hoping that all the extras that you guys hadn't got would be in my box. Oh well....
And no power adapater, either!
I put it on my DroidX charger (same micro-USB), and the yellow light came on briefly, then went dark. I never did get a charge light on it. Tried another USB charger, a Phillips DLO, and that worked fine. Apparently my battery was fully discharged -- the Kindle wouldn't do anything until it had been on the Phillips for a while. But now that it had some charge, and I was able to poke around it a bit, the DroidX charger is working. Go figure, maybe if it's discharged too far, the light doesn't even come on?
So, people who are having problems charging, try different chargers.