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Could glitches in automated share-trading threaten financial stability? After a spate of recent technical problems on stockmarkets, some argue regulators should slow down the high-speed trading which uses artificial intelligence in trading systems. Lesley Curwen talks to Scott Patterson, a Wall Street Journal reporter and author of Dark Pools.

Plus, the legacy of the Olympic Games. Some have suggested the Athens Games of 2004 triggered the financial decline of Greece. Spyros Capralos, President of the Hellenic Olympic Committee and a key organiser of the 2004 Games, says that is a myth. He argues the Games gave a huge boost to the country's infrastructure.

And Shaun Watling describes what corporate sponsors can hope to get out of the Olympics. He is Chief Executive of Redmandarin which specialises in advising companies on making the most of Olympic sponsorship.