Is it really a safety issue?
The failure may have caused delays and inconvenience, but I am not convinced that in the event it caused an unreasonable increase in risk to passengers. IIUC the controllers reverted to the old manual system which is just as safe, but has less capacity (though arguably there is greater risk of the possibility of human error in a manual system than of a computer [i.e. programming] error in an automated system).
Biting the hand that feeds IT
