I have recently discovered this same problem on my Kobo Touch with three books, before contacting the helpline the books showed up in my library but couldn't read them as I couldn't get passed the cover. On looking ate the table of contacts everything was doubled up or sometimes more. I contacted the help line and they told me to log into my Kobo account and go into My Library and then go into purchased items then click on the boxes next to the books I wanted to reload and bookmark them. I have tried this to no avail, the books have now vanished completely from my libraray. I was using Windows 7 64bit so tried the using my old laptop running Windows XP but still no joy. Has anybody found an answer to this problem yet as I notice the message I'm replying to is a few months old.