If you have a Mac, and have a large Calibre library, it takes a while for Calibre to recognize the books on the Scribe and allow you to transfer books. I have 2,000+ books and there are sometimes problems. Kovid told me that that was too many books to have on the device, so I've been deleting books that I know it's unlikely that I'll read again.
It's a great e-reader otherwise, though, with fantastic battery life.
Jim
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