I don’t have Firefox open now, but I remember there are three such options in Preferences > Advanced > the second tab from the left. I think two of them are checked by default – they involve sending anonymous usage information. You can uncheck the checkboxes to disable them.
On the second launch after a new install or new profile creation, Firefox shows a notification bar about these settings with a button to quickly change them. I don’t remember how long ago those settings were added, nor whether they showed the notification bar for those updates.
On the second launch after a new install or new profile creation, Firefox shows a notification bar about these settings with a button to quickly change them. I don’t remember how long ago those settings were added, nor whether they showed the notification bar for those updates.