Re: Networking issue?
BA still uses Amadeus. Slight problem is that it has deployed its own custom-made middleware layer and UI over the top of the check-in components, which is the part that usually goes wrong. Outsourcing management and maintenence to offshore providers ensures that the expertise needed to fix things when they go titsup has been dispersed to the four winds.
AC because I still have friends there (though not as many as I used to)