Rated 3 out of 5 stars

by Otto The Turtle on Jan. 28, 2012 ·

In order to use this addon, you must be connected to the Tor network.

In any case, there's still a bug in the search engine file. To fix it:

* Edit the duckduckgo-tor.xml file in your Mozilla profile directory and replace https://3g2upl... for http://3g2upl... (remove the 's' in https://):

gedit ~/.mozilla/firefox/*.default/searchplugins/duckduckgo-tor.xml

I don't use Windows, so don't ask me for the location of your Mozilla profile folder there.