Until last year, wind power appeared immune to the worst ravages of an economic storm sweeping the globe. Then the world's biggest manufacturer of wind turbines took an axe to 3000 jobs in its native northern Europe. Did it signify not just a readjustment to a single producer's business model but a threat to the technology's continuing worldwide deployment? Or, as some believe, are fears of a decline in the sector's fortunes simply overblown?