Originally posted on TechCrunch:
Amazon yesterday updated its Kindle for iOS app, which works across iPhone, iPad and iPod touch, to version 3.6.1. The update was meant to fix a few bugs as well as the registration process. Instead, that update seems to be wreaking havoc on bookworm-style iThing owners who watched as their Amazon digital libraries and saved settings were erased before their eyes.
Update: Amazon has responded with the following advice:
We have identified an issue with the app update that may cause your app to become deregistered. To register, enter your Amazon account e-mail address and password and all your Amazon content will be available in the cloud. We have submitted an update fix for this issue and are working with Apple to release.