Anyone know why I have to re-download my Nook Books everytime I log out of the app on my s3? It didn't do this on my Droid X2. Anyone know how I can keep the books downloaded? I hate to keep the app "open" because of apps using battery life. I've looked on Nook for a way to save books to sd card and can't find anything. I've also googled this issue and searched forums but can't find another person/post with the same problem! I REALLY don't want to have to download the book I want to read EVERYTIME I log into the Nook App, or keep the App open and never logged out!