Sound like you are left-clicking on the web page link to the .pdf - this will open it in Acrobat but inside your web browser. Try right-clicking on the web page link to the .pdf and selecting 'Save As' and saving it to your local hard drive. Then go to that folder and open the file in Acrobat normally.
Try searching the forum for 'flock problem' to find any threads that deal with those issues. Search is near the top right of this page.
Edit - this link should work and take you to a search page for those two terms
Thirty Day Challenge Forums - Search Results