Sydney's Daily Telegraph has finally got hold of the story and has reported that the shutdown was due to oil indication light. On return to Perth th starter was found sheared and this was the most likely cause. The boss has already made a statement that the aircraft has just got back from a check in Hong Kong.
I don't know about anyone else, but for the engine oil to get out because of a starter failure, it must have been a pretty seriuos failure.
Any of the Perth lads have any first hand info.
Cheers Crow
Midair malfunction hits Qantas jet | The Daily Telegraph