Apparently I don't understand how to uninstall add-ons across Firefox sync. I'm on Firefox version 29.0.1 and did not have a Sync account until version 29 came out. I use Sync across 5 computers, 3 at work and 2 at home. I'm trying to uninstall some add-ons on one computer at work (I want them uninstalled across all five computers), but as soon as I restart Firefox and it syncs up, the add-ons re-install. The other four computers are all powered on, but Firefox is not running on any of them at this time. All the information I have read from Mozilla support says Sync will allow me to install, enable, disable, and remove add-ons across all synced browsers, but so far that is not happening. Do I have to disconnect all five browsers, uninstall the add-ons, then re-sync them in order to get rid of them? Or do I have to go into 'options' and de-select 'add-ons' and uninstall the add-ons manually at every computer?