text:  Welcome to NewsHour from the BBC World Service. I'm Celia Hatton. A major IT outage has affected businesses and organisations in much of the world, from airports and banks to hospitals and media outlets. Trouble for many, including at Australia's Public Broadcaster. The ABC has basically been broadcasting without the capacity to play tape, without the capacity to play stories. It's essentially been people talking non-stop on air, trying to make it up as they go along.