Arghhhhh! The newest Acrobat Reader sucks big time!!! Its Content Preparation Progress/Please wait while the document is being prepared for reading dialog is something beyond my understanding. It is “processing” the document with the speed of 1-2/pages per second, and stays on top of e.g. browser; plus, you cannot do anything with the document while the dialog is there, e.g. no searching.
How could older Acrobat Readers show me my documents without displaying this beautiful piece of “contemporary PC art”, and the newest reader cannot!?
UPDATE There is a way to turn it off! There is the Reading > Screen Reader Options > Page vs Document option in Preferences, and it should be set to Only read the currently visible pages. No idea, why it had different value, as I have never touched it. Anyway, I am not alone in this – many others had the same issue, when this setting got somehow changed.