Hey All.
So after the last Firefox update, my Mac computers have started crashing to the point of the dreaded 'power off' (kernel panic) screen. Both computers have the latest OSX installed and just recently had a Firefox update. I've now noticed this on my Macbook Pro and my iMac. Dumping Firefox off the system and installing it fresh from download seems to have cured the issue (for now).
Just wanted to share this in case anyone else is having the same issue.