- Test with a standard (non-Hardened) kernel, and with linux-lts.
- Uninstall and reinstall Firefox and check there's no filesystem
Still doesn't work.
- Test with Beta, Developer and Nightly versions, from the repos and
direct from Mozilla.
Nightly build seems working fine.
- Test using a live installer environment ("Live CD") which has Firefox
- Test your RAM.
RAM has passed memtest.
- Check your temperatures and clean out your machine.
Seems to be okay.
Cheers, Hubert Hauser.