Is there a setting where you can set a timeout for access to passwords so when the time limit it is up it forces you to re-enter your master password to gain access when on a page asking for credentials? Currently I login with my master password and every site I go to Firefox will have my passwords ready to use, even if I leave my computer on for a week. How about a four hour timeout. After four hours and I go to a site asking for my credentials, Firefox will prompt me for my master password before letting me access the vault?