Tim Lampe of Lakeshore Realty represented both the buyer and the seller.

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Zelda Heller, the listing agent with TTR Sotheby's International Realty, lives in the building and brokered both sides of the deal between the seller, retired businessman Paul Elicker, and the buyer, a real-estate developer in the area.

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Roni Marley of Hawaii Life Real Estate Brokers in Kauai represented both the buyer and the seller.

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What is a licensed retailer to do in the event of a "double denial" (both the private party buyer and seller are denied).

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Goldman has served as adviser to both seller and buyer, is one of the largest investors in Chicago-based Archipelago, owns more than a dozen exchange seats and has close ties to NYSE's chief executive officer, John Thain, who is a former Goldman president.

FORBES: Careful What You E-Mail!

These same junior Goldman bankers who pulled all-nighters doing the grunt work on the Archipelago-NYSE deal were also maneuvering the firm for a boost in the rankings of deal advisers related to the transaction, and gossiping over possible conflicts in advising both buyer and seller.

FORBES: Careful What You E-Mail!