Hi Terence, Great blog and a lot of ver useful information. I recently purchased the 511tEB from Waterstones and am impressed by the clarity, speed etc. One of the things that I have noticed, however, is that I have purchased 5 books recently i epub format from 2 suppliers. Out of these 5, 3 of them work fine, but 2 of them (both from different suppliers) do not work on the reader. If I try to access them, the reader displays 'processing' but then just hangs there. I have left it processing for up to 15 minutes, but nothing happens. I have tried reinstalling the books, to no avail. They all work fine in adobe digital editions. Spoken to book suppliers and no one is able to help ( although they are really trying). Getting to the stage that I am unsure if any book I buy in epub format will work on the machine or not. Has anyone else had similar problems. I am considering whether to try to send this back and change it for a Sony pocket. I know less space, etc, but don't want to buy books I cannot read. Any help would be greatly appreaciated. Regards Kevin