I don't recall offhand anymore what way to configure it which causes Firefox to crash.
But you could try temporarily changing the hosts line to just
hosts: dns
Edit: I can cause the problem you have by using "hosts: files nis dns" and my solution was to in stead use "hosts: files dns nis"
I don't know what most of the words in your hosts line do, but having dns too late might possibly be the issue.
But you could try temporarily changing the hosts line to just
hosts: dns
Edit: I can cause the problem you have by using "hosts: files nis dns" and my solution was to in stead use "hosts: files dns nis"
I don't know what most of the words in your hosts line do, but having dns too late might possibly be the issue.