I have deinstalled a package (epiphany) which showed up thrice in the dash. Now, one of the application-icons is gone, yet two remain.
I want to know where to start looking into this problem: how does the Dash application-lense determine its contents? And where (if at all) is that saved or cached?
lsof -c unity and the likes, may list the file(s) or folder I am looking for, but wading through all that content is just too much work :)