Disconnect Search 2.0.7 on Firefox 42.0. Firefox Add-ons Manager shows warning: "Disconnect Search could not be verified for use in Firefox. Proceed with caution." Mozilla article http://mzl.la/1J7Lcsp states that unsigned Firefox add-ons will be deactivated beginning with Firefox 43.
Disconnect Search 2.0.7 on Firefox 42.0. Firefox Add-ons Manager shows warning: "Disconnect Search could not be verified for use in Firefox. Proceed with caution." Mozilla article http://mzl.la/1J7Lcsp states that unsigned Firefox add-ons will be deactivated beginning with Firefox 43.