Yes, in some programs it's like this: you move the stylus and then the zoom changes to the next step. This solution is just poor. You can not freely zoom how you like.
Look here, how zoom and pan should work:
http://www.youtube.com/watch?v=Ppi3NDIOswk
Even more, you can not navigate the whole pdf-file after you zoom it !! Some parts of the file can not be reached. Not enought that the solution of pb related to zooming is poor, it even doesn't work correctly, since you can not zoom and then navigate to all parts!
This kind of stuff is not hard to implement. How can somebody accpet, that they don't fix such big and horrible bugs? I really need the pdf-zooming, and I waited for month for this update, and still it is not solved.
Shame on you pocketbook.