For a while now my G-tab "forgets" that the kindle acct is registered and when I open the app it wants me to sign in and register with Amazon all over. This causes me to have to remove all of the books I have and then re-sync them. I am running a rooted G-tab with VEGAn 5.5.1. This predated the update from 5.1 to 5.1.1. Has anyone else experienced this? I have deleted and reinstalled the app several times with no change. The only time other apps have done this is with a manual update from the Market (Bank of America for ex). There has been no recent update to Kindle that I ma aware of. Thanks.Jay