We have sharepoing 2010, search used to work back a few months ago (I had to edit the registery for the loopback issue). About a month ago search was not finding any new items., but was returning the old items.
While troubleshooting the issue I noticed that the registry key was gone again, so I readded it and now crawling works fine, but when I search no results appear (I had reset the crawl index).
I am not sure where to look anymore.