John Hasler wrote: > What Firefox version? I used to see frequent Firefox crashes > (apparently memory leaks: my system is always up) but that stopped a few > years ago (though the irritation of that has been replaced by the > irritation of being required to create a new profile every time I > upgrade Firefox).
but you can also import and activate your old profile https://support.mozilla.org/en-US/kb/profile-manager-create-remove-switch-firefox-profiles