I found that dialog to be useless. Maybe it helps Mozilla but it
doesn't help me. Just more nuisance. I'm using Windows 7, not Linux,
but the popup still doesn't help me. I figure there are plenty of users
with the install-time defaults that can report problems with Mozilla.
I'm not going to be one of them.
"Option -> Advanced -> Data Choices -> Enable Crash Reporter" was
already disabled but I was still getting the popup about Firefox
crashing (usually long after I already exited it).
For old versions, you edited application.ini:
[Crash Reporter]
Enabled=1
and changed Enabled to 0 (zero).
I was still getting the popup about crashes although I set "Options ->
Advanced -> Data Choices -> Enable Crash Reporter" to disabled. I went
to about:crashes and cleared those out. Since then, no more popups
about crashes (and nothing listed in about:crashes) but then I don't
know if there have been crashes (when I'm not even using Firefox because
I told it to exit long ago).
I suppose I could also rename crashreporter.exe to something else, like
changing the extension to .DISABLE_exe but I'll wait until I see another
unwanted and useless-to-me popup about a crash.
On trying to load Firefox, I've also gotten a popup saying Firefox was
still running but I had exited it long ago. I suspect one of the
add-ons is not unloading which keeps Firefox loaded. Mozilla needs to
first do a graceful request to get add-ons to unload but if they don't
after a timeout period then forcibly terminate them. If the user exits
Firefox, it should really exit.
Those popups only show up maybe twice per week for me. If they are
happening several times every day for you then I would disable all the
add-ons you installed and retest Firefox's stability.
While I didn't find useful info in the crash files, they are text files
so you can open them with any text editor. Or go to about:crashes and
click on the links there to look inside. Maybe in your scenario they
may reveal why Firefox is crashing so much for you.