But in April McDonald's Chief Executive James Skinner said the company was still testing the oil and did not know when it would make the change.

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That's been enough for Chief Executive James Skinner , who's been on the job for 14 months, to favor a back-to-basics approach centered around pleasing the customer.

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And with billions and billions served helpings of the lardaceous potato strips, it's a sticky moment for James Skinner's Golden Arches, which last October boasted of its initiative to print nutritional data on its packages to help consumers make informed choices about what to eat.

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