Originally Posted by LGN
Version 2.0 of ADE messed up the lay-out of ePUBs because of books that used the Apple tags and font tags somehow. While most of use don't use Apple tags (or font tags for that matter) users of ADE and eReaders based on that version were irritated. They were quick to blame the Publishers, the online bookstores and there appeared an article in the news. Eventually Sony came with an fix for the affected eReaders but it looked like nobody blames the source of the troubles... Adobe. Interesting note: The affected ePUBs were not flagged by the ePUB checker in use a couple of months ago. ADE is still version 2.0 and the publishers had to fix their eBooks.
Which Sony Reader uses ADE 2.0?