I upgraded to Adobe Reader 10.1.3 on my Mac with OS X 10.7.3. I can open PDF files on Internet, but can neither print them nor save them to my hard drive.
I had the same problem and stumbled by accident on an odd way how to save the PDF file.
After the PDF file is visible, press the key escape “esc”. A new toolbar above the PDF file will appear. Press the “disc” icon next to the “printer” icon. A window drops down, and now you can save the PDF file in your download folder.