I recently asked a question. It got a few votes, an answer, and a few hours later Sivaram noted that it was more or less a duplicate of another question. I agreed, and started to close it myself. But I ended up just being the 2nd close vote.
Why is it that OPs can delete their own questions but not close them? I don't want to delete the question - Gerry has an answer that is different than the answers on the 'original' thread. But it shouldn't really remain open.