Has anyone else run into the problem where you turn the PRS-650 on and find you're locked out of the book you were just reading? The blanks screen of DRM is fiercely annoying. But more than that, I discovered today that all of the highlighting I had done in two recent academic books is gone. Very frustrating.
I have a write-up of my experience, along with a frustrating conversation with Sony support at my website
here.
Does anyone have any suggestions how to prevent this from happening again?