I had a single PDF left on my reader:
"Souled" from BookHabit.com
http://www.bookhabit.com/book_details.php?book_id=249
It is a simple file, pure text. After the upgrade my Cybook skips some lines and others are truncated. Tried different zoom levels, same rendering. Also tried to remove and readd the same PDF, no change.
I simply extracted text into a text file, so don't mind so much. Still, I wonder if the PDF rendering engine now has some new bugs introduced?