I am having problems saving .pdf files from some websites (ex: Time Warner Cable) with Firefox. When I click on View or Save the .pdf, Firefox opens a new window, and I can see the document. However, sometimes it won't let me save it. When I go to the bottom of the document, the Adobe menu bar pops up, but when I hit the save icon, nothing happens (note: on rare occasions, hitting the save icon will open a dialog box and allow me to save the document; however, most frequently, it does nothing. Even on the same site - sometimes it allows me to save; sometimes it doesn't). There is noting in the Firefox window that will allow me to save either (just Move, Size, Minimize, Maximize, Close). Both Internet Explorer and Chrome allow me to save the .pdfs from these sites, so it is not a site problem.
Disabling the Adobe plug-ins worked - thanks!
Interestingly, I had first tried your second solution (changing the action Firefox took when downloading .pdfs through the Applications Panel under Options); however, this did not work... the Adobe plug in seems to override these rules.