Good at first, ultimately useless Puntuado con 1 de 5 estrellas

All configuration/settings and layout of buttons of installed addons are not preserved.

All it does is just install the addons, you previously installed.

Esta valoración es de una versión anterior del complemento (5.1.1). 

Full profile backup and OPIE

A "Full profile" backup/restore does preserve your configuration/settings and layout of buttons. To backup/restore your extension settings individually, see the OPIE extension (https://addons.mozilla.org/en-US/firefox/addon/6152 - currently in sandbox)