I'll answer all three posts on this subject in this one. In response to Sarah, it happens when just reading along, so I've done nothing toward navigation at all. In this particular book, I could sometimes read for ten or fifteen minutes before it'd jump back, but it'd inevitably do just that. In response to James, I haven't been able to correlate this behavior with querying the machine for my location in the file. I very rarely query for my position. And, finally, in response to Lou, this behavior is present in books and magazines from Web Braille. Unlike a repeated scan which does occasionally happen with books from BookShare, these jumps aren't a whole page backward, just a couple hundred words. Jeremiah