I’ve used Firefox since release 3, but starting around release 10 it has stopped playing nice with Adobe PDF files. A crash or two a day occurs, always when a PDF file does not open, although the file that crashed FireFox always opens perfectly with Internet Explorer.
Sill use Firefox but it’s frustrating at times with the PDF crashes.
Try the add on “PDF Download” by Nitro, it may help....
I had similar PDF problems with an earlier version of FF. The next major upgrade seemed to correct it.
11 has crashed several times.
12 installed yesterday — with a big notice that it didn’t know where this new version came from. [Even Mozilla can’t keep up with its own revsions.]
[Upgrades — no matter what they fix, they also break something else.]
Foxit PDF reader/editor works great and is way leaner than acrobat.