Waiting on the reports from this one.
This company landed gear up in Medina KSA a few years past 2003 if my memory serves me correct, managed to get the aircraft back into the air after touchdown at Medina, they also taxied into a light pole on another aircraft while flying under contract for Saudia.
I dont know the airbus so I cannot comment on why the crew did not know the gear was not down and locked, must have been many failures or just warnings ignored as the first knowledge the crew had of this was by ATC by then it was too late.
Hopefully they have cleaned up the past problems.
Maybe this was not the operators fault, only time will tell.