It looks like a hash collision to me: I posted 是囚徒困境，不是佯谬
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送交者: steven 于 2009-12-16, 01:47:32:
回答: 每个人都按照最佳的方针做事，总体的效率还是有可能不是最优 由 yuffie 于 2009-12-16, 00:46:01:
and I got 该贴重复 error. Not sure what went wrong, but if the repeat posting is checked using hash, this might be a hash collision.
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