@Harry and mjdb:
My cybook loses the page all the time, so is there an easy way for me to check for corrupt files? I'm not using an SD card currently and it seems to happen with pretty much every book.
I know that leaving the Cybook on all the time shouldn't lower my battery power too much, but since I started leaving it on I have noticed that it definitely dies a fair bit faster, so I would like to fix the problem. Any ideas at all would be appreciated