Locking of Series in Comic Zeal and Pages and Notebooks in ThinkBook has been a very requested feature. As a developer my instinct has been to create as tight and secure a locking mechanism as possible and because it is so much work it just hasn't happened.
Lately I've been thinking more and more about how many weaknesses any system would have, no mater how secure I tried to make it.
Update fixed issues with manga, reading position not saved in long comics, fuzzy text on retina, crash bugs, remembers fit-to-width setting.
Comic Zeal update is now out!