Last week, it started dropping the registration. It was easy to register the unit again, and we were back in business. Unfortunately, a few hours later, it dropped the registration again. I even tried to restore it to factory defaults, but it continued to deregister.
Saturday, I called Amazon, and it took one hour on the phone and three levels of support to get the problem fixed. I gave tech support my serial number, and they said it was registered to "Adam's Kindle." I told them, there was no one named Adam at this residence, and there never had been. It turned out Amazon had sold two Kindle units with the same registration code/serial number! Both of our units were getting deregistered as the other unit was registered. We were told that this problem cropped up about one in a hundred. And, it couldn't be fixed in the field. They would be sending me a new Kindle DX, Free 3G, 9.7" E Ink Display, 3G Works Globally
, and I would return the old one.
Now the really interesting aspect of this troubleshoot came when we learned that they couldn't just send out the Kindle DX, Free 3G, 9.7" E Ink Display, 3G Works Globally
So, if you find your Kindle dropping registration and you have to call support, be sure to ask them if there is a second registered to the same serial number.
Returns are easy. They sent me a pre-paid label, and told me to ship it back in the box it came in!