Just updated to iBooks 2.0, and have 5.0.1 jailbroken. For some reason no matter what I do, I can't sync books back to the iPhone. It shows them copying (even PDF's), but once I launch the app nothing shows up. I tried uninstalling ibookfix2, but that didn't help. Also can't uninstall iBooks when I hold my finger over it. The red X is missing....