Ever since I installed Leapard on my Mac I haven't been able to view PDFs using Acrobat Reader 9. Even if I try and manually designate Acrobat 9 as the application to read the PDF it still won't read it. I have even tried deleting it and re downloading/installing...and it continues to not work. What I can do is download PDF's to my desktop and view then with Preview. This is incredibly inconvenient and annoying, however, Does anyone know why Acrobat 9 won't work, or how I can fix this problem?