Here's the version of Stepping Stone that Duffy has been performing live recently. As someone a little older and wiser than me kindly pointed out, it samples the old Monkees track called "Stepping Stone".
The audio and photos in the video are from the Main Square Festival, Arras, France (July 5th 2009). Hope you like it... I haven't made many vids before. :-)
Here's the Monkees version for comparison:
So I guess this is what Duffy was up to at H2O Beach (Romania) then and maybe she's done it at the other recent concerts too.