How to Troubleshoot Mozilla Firefox Crashes
 

Firefox can crash for a variety of reasons, but you can quickly fix most crashes with Firefox’s Safe Mode and Reset features. However, even these tricks won’t fix every crash.

Web browsers are complicated pieces of software that interact with lots of other software on your system – extensions and themes, plug-ins, security programs, graphics drivers, and more. Incompatibilities or out-of-date software can often cause crashes.


http://www.howtogeek.com/135351/how-...refox-crashes/