Have you noticed any pattern to which websites or features seem to be associated with the crashing?

In the last section of the following article, there is a description of how to access data Firefox may have stored about your last few crashes. If you find crash IDs in your about:crashes list, can you reply with a few of those? You might need to click-to-submit them to Mozilla's crash analysis system if they have not already been submitted.

Troubleshoot Firefox crashes (closing or quitting unexpectedly)

I notice you have quite a few third party extensions. I am not familiar with most of them. You could try disabling the ones you could live without for 72 hours and see whether that has any effect on Firefox's stability. You can do that on the following tab:

orange Firefox button (or Tools menu) > Add-ons > Extensions category

Restart Firefox using the link provided on the Extensions tab. (It closes and starts Firefox again, restoring your open windows and tabs, but if you have a huge number open, it's possible that some might be missed, so please save any ongoing work just in case.)

See:

• http://kb.mozillazine.org/Firefox_crashes
• https://support.mozilla.org/kb/Firefox+crashes

Do the crashes still occur in Safe mode?

• https://support.mozilla.org/kb/Troubleshooting+extensions+and+themes

If you have submitted crash reports then please post the IDs of one or more recent crash reports that have a "bp-" prefix:

• bp-xxxxxxxx-xxxx-xxxx-xxxx-xxxxxxxxxxxx

You can find the IDs of the submitted crash reports on the about:crashes page.

• You can open the about:crashes page via the location bar, like you open a website, or open this page via "Help > Troubleshooting Information".

See:

• http://kb.mozillazine.org/Mozilla_Crash_Reporter
• https://support.mozilla.org/kb/Mozilla+Crash+Reporter