@darkduck - There must be some kind of misunderstanding here. I've got the latest source and we're nowhere to be found.

[nil@tmbg ~/mozilla-central]$ grep -r duckduckgo . [nil@tmbg ~/mozilla-central]$

Furthermore, the list of the default / available plugins can be found here: http://hg.mozilla.org/mozilla-central/file/a896a9e237a0/brow....

If you have any information about the future of this, we would be really excited and interested to know, but we would appreciate a screenshot or a link to verify. I expect you have DuckDuckGo in your search list from before (thanks!) and the new installations are just picking up on that in the preferences directories generated upon install.