Thanks a lot for your answer, it indeed explains the issue.
Though not being a bug, shouldn't it be possible to remove the spaces between ordinary paragraphs and not within different scenes without having to manually edit the CSS file? This is particular inconvenient when you have to do it for multiple files (in my case for all in my library) because the respective styles have different IDs for different books, so it is quite hard to automate the task. It would be nice if calibre provided an option to do this...
Last edited by tlangner; 11-07-2012 at 04:36 PM.