hello, could you provide your latest few submitted crash reports? please enter about:crashes into the location bar, copy the latest few report ids from there starting with bp- & paste them here into a forum reply. this will give us a better understanding what may be triggering those crashes.

Report ID Date Submitted bp-d1fb723c-6082-45b1-9b39-8deea2160311 11/03/2016 21:44 bp-0942136e-c87e-48d9-a3a8-e42f52160311 11/03/2016 20:40 bp-99c4276e-dcfa-4d1a-aa92-360572160311 11/03/2016 20:05 bp-cbbb0aa7-49e2-4424-94d7-c06422160310 10/03/2016 20:10 bp-f2ad9687-478c-415a-bcee-b96f02160309 09/03/2016 21:01 bp-7e6669d1-0fd2-4435-99c6-0fa442160309 09/03/2016 19:43 bp-4d721229-0a24-4865-a2e6-ece622160309 09/03/2016 19:38 bp-a52d851b-b89d-4da2-83e5-fc32f2160309 09/03/2016 19:04 bp-a069482c-3dfc-44d9-916f-742982160309 09/03/2016 18:58

thanks for following up with some crash ids. unfortunately those crashes appear to be caused by trusteer rapport which is running on your device and hooking into firefox - please check that you are fully updated there or temporarily disable/uninstall that software for the moment.

please also get in contact with trusteer's support which are usually very quick to respond and fix issues like this: https://trusteer.secure.force.com/PKB/articles/en_US/FAQ/browser-crashes