I have feedapi set to get only the new items (not update old items in the database already). On refreshing feedapi manually, I get a lot of messages like "# The following languages were detected: 25 en., no new items".

So I am wondering if Language Detection can be done only on the new items being stored, it seems to me as if languages are detected for all items in the feed, even if they were processed earlier, and this slows the system down.