[CentOS] firefox-45.6.0-1.el7.centos.x86_64 crashing... unusable

Mon Dec 19 13:44:11 UTC 2016
ken <gebser at mousecar.com>

Last night installed the latest, firefox-45.6.0-1.el7.centos.x86_64.  
Fired it up this morning and within the first hour it's crashed three 
times.  That comes to it being usable for about five minutes before it 
crashes.

Anyone else getting this?