That blasted ash cloud, still lurking about these islands as we write, has caused the producers of Iron Man 2to cancel the world premiere in London on Monday. Happily for fans of the superhero, there appear to be no serious problems with the distribution of prints for the film. Other London premieres hit by the volcanic irregularities include those for The Joneses, featuring Demi Moore, and the latest Miley Cyrus flick, The Last Song. The Body Cinema now turns its gaze nervously towards Cannes. Will the dust clear in time for the festival?