The problem appears to be with embedded PDF viewers in some browsers, rather than with the PDF files themselves. In particular, problems have been reported when using Acrobat 5.0 from within Internet Explorer or Netscape, whereas other combinations work fine. In these cases, we recommend the following:
Try saving the file to disk and using Acrobat reader outside of the browser (bypassing the browser-embedded PDF viewer).
Try another computer/browser/Acrobat combination.
For the Reference and Developers manuals, you can use the HTML documentation if hardcopies are not needed.