The network takes twice the number of servers per user, needs at least one administrator for every 100 users, and so far stays up only about 85% of the time.

CNN: The rebirth of Novell

Last year there were 1.4 billion journeys by rail - the highest number since the 1920s, when the rail network was around twice the size it is now.

BBC: Searching for the most expensive train journey

Staff costs at Emirates are around 15% of overhead, against well over twice that for a typical American or European network carrier, says Mr Flanagan.

ECONOMIST: Aviation in the Gulf