I added a few html books this weekend then converted them to epub. At some point many (but not all) of the epub books disappeared from the calibre db. The epubs are still in the calibre folder but calibre says there isn't any files associated with the library entry. I had to re-add all the books. Not sure if its related but once I create the epubs I go and delete the zipped html file to save space as I don't need 2 versions of a book in the calibre library. Is that acceptable practice?
Also there seems to be a strange 'u' in front of some of the fields when using calibredb list. I'll
add a ticket for this one as its easily reproducible.
Finally the built in epub viewer shows the comments field twice if you view the file info. I'll
add a ticket for that as well.
Cheers,
Crazy