I too have this same problem. When I open a PDF document, the program stalls for sometimes up to a minute before allowing me to scroll through the pages or move the window on my screen. I noticed someone else complaining of delays associated with the blue account icon in the upper right portion of the window. My thoughts are, these two are unrelated. I am not a programmer and do not claim to know the internal workings of the Adobe program. First: The stalling or freezing when documents are opened. I found that if I disable signature verification, my PDFs no longer freeze. Click on the blue icon in the upper right portion of the window. Click on preferences. Scroll down to Signatures. Find the section for "Verification, Control how and when signatures are verified". Click on the "More" button. Remove the check mark from the first box "Verify signatures when the document is opened" After doing this exercise, I tested numerous documents and haven't had one freeze. Second: The hesitation associated with the blue account icon. I still get a slight hesitation, one or two seconds, when the account icon connects and turns blue. This is certainly something I can live with compared to the one-minute delay I spoke of above. I'm really interested in hearing if this works for others. Good luck all.
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