BABS (British Airways Booking System) was creaking badly and had to be replaced. As stated above they replaced it with Amadeus. The cost associated with supporting BABS were huge. It was essentially a home made res system that has been in use for many, many years. If BA had not replaced it they ran the risk of more catastrophic downtime. The changeover has been relatively smooth. I've spoken to Exec Sales 3 times this week and got through quite easily. As with any new system there are a few problems. In addition the staff are still getting to grips with it.
I would bet my house this this WILL NOT bring BA down and, IMHO, those that think it will all talking complete and utter pish!!!