I can't open pdf files on Firefox, however, I can open them on Safari. What can I do to get Firefox to open my pdf files?
You need a PDF add-on for Firefox.
Right now most work with FF 3.6 but haven't been updated yet for FF 4.0 just released
There is one that works with Google Docs
Funny, there is a version of Flash for Linux with 1% market share, but no PDF plug-in for the most second used browser in the world.