Other Help Topics :: Getting Firefox to STOP saving passwords, etc.

stupid,

Will that setting become permanent? Next time I launch Firefox, will it be respected?

If I'm not wrong, the settings are saved under your personal profile in the file '.mozilla/firefox/<random-string>.default/prefs.js', so yes, the settings should be permanent.

Thanks stupid,

I've found it and have set the .once values to false.

original here.