Earlier submission: http://news.ycombinator.com/item?id=4597716 http://news.ycombinator.com/item?id=4597716 Urls are exactly the same, but duplicate detection

Earlier submission: http://news.ycombinator.com/item?id=4597716 http://news.ycombinator.com/item?id=4597716 Urls are exactly the same, but duplicate detection failed for some reason.