Hum, I have some fresh bugs/issues to share :
latest version of calibre : 0.6 beta 8
1* epub files aren't zipped as idpf suggests at
http://www.openebook.org/ocf/ocf1.0/download/ocf10.htm (only
mimetype in main dir, then META-INF and OEBPS to store files, instead
here most files are directly in the main zip directory)
2* I don't know why but calibre generated epub make okular (kde) crash.
This is strange because it never happened to well-formed epubs till now,
it is not issue 1 so I'll do further testing.
(maybe it's related to htm and ncx files being all on a single text line, I dunno...
meanwhile I tried to check if it was guide, cover but none worked)
3* Chapter recognition doesn't do anything. I have a decent algorithm for
single html files bold (<b>) recognition (h1 and h2) which maybe may help,
but it requires some ui (in my case I choosed Qt and a tablewidget) for
some occasional manual recorrection.
thanks for the good work.