Bob,

I'm too paranoid to click your links with the current PDF exploits that are in the wild (no offense), but it sounds like one of three things to me:
  1. Your web server may not have the proper file type information for the PDF file type (in other words, the file mime.types in your web server configuration doesn't have the mapping "application/pdf     pdf" in it).
  2. The files don't all have a PDF extension on them.
  3. Your brower somehow lost either the mapping of application/pdf to Acrobat or the mapping of the .pdf extension to Acrobat.
Chuck

Chuck D'Antonio
Sr. Director Professional Services
Acquia - www.acquia.com
Mobile +1.617.388.1120


On Wed, Jan 20, 2010 at 7:05 PM, Bob Smither <Smither@c-c-i.com> wrote:
Hi All,

I have a D5 site with a page of uploaded PDF files.  The files are
listed Drupal style on the page (http://lrcf.org/Spotlight).  Up until
recently when I double clicked a page the pdf would open in acroread as
expected.

Recently double clicking a linked pdf results in one of three results:

1.  Displays as expected (example - the January 2010 issue)

2.  Firefox window opens offering to save the pdf file (it is not opened
as expected) (example - December 2009 issue).

3.  Firefox window opens stating Download Error:
"/tmp/Spotlight-2009-11-3.pdf could not be opened, because the
associated helper application does not exist. Change the association in
your preferences." (example - November 2009 issue).

I am viewing all this on Firefox from an updated CentOS 5 Linux box.

Does anyone have any idea what is going on here?  All of the files
appear to be normal pdf files and open as expected when they are local
files.

Thanks!

--
Bob Smither, PhD                                   Circuit Concepts, Inc.
=========================================================================

            - Ubi libertas habitat, ibi nostra patria est -
              "Where liberty dwells, there is my country"

=========================================================================
Smither@C-C-I.Com  http://www.C-C-I.Com  281-331-2744(office)  -4616(fax)

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