Firefox stopped working in the middle of writing an email. Couldn’t even restart the browser without it crashing. Rebooting didn’t fix it. Reinstalling it only temporarily fixed it. I got frustrated and installed the ESR version and it STILL didn’t work.

This whole incident makes me feel better about myself. Like any developer, I’ve deployed some nasty bugs into production. But I’ve never completely broken a web browser relied on by millions. My heart goes out to the FF team members working to fix this.