A few things I note trying out this special page:

• There's no explanation when you get no matches -- did you misspell something? Did it just break? Did it submit correctly? Who knows!

• It searches for matches in the local image database only, and does not return any results from remote repositories (Commons etc)

• It gets the hash from the local image database only, and cannot search for local duplicates of a given remote file.

I'd recommend this get redone to:

• clarify when the requested file could not be found
• use FileRepo system correctly to query both sources and matches out of all repositories

Version: unspecified
Severity: enhancement
URL: http://en.wikipedia.org/wiki/Special:FileDuplicateSearch?filename=Elephant_Mud_Bath.ogg