Multiple design faults....
Initially:
1) Autobrake and anti skid swithed itself off on touch down --> Fixed
2) IFE screens went dead when TO power was set --> Fixed
3) Resonating noise in business class cabin coming from Hydraulic lines --> Identified as a problem with hydraulic lines being too long --> Fixed
Two weeks later, the QR team returned to TLS
1) During the test flight the hydraulic lines caused severe vibrations again in Buss Class cabin. The seats where not in place but the famous bar was --> vibration too bad for acceptance!
Airplane is now still in TLS, airbus engineers are working on it! QR engineering team was congratulated by Airbus since they where the first team to discover/identify the problem, which is an existing one on all A340-600s flying.
QR is known at Airbus to be one of the toughest ( if not the toughest) customers when it comes to accepting an airplane and rightfully so apparently!