Just FYI-- Switched to AT&T (British Airways) about a week ago, was told then to call back after Jan 3 to add my BA ff# to the AT&T account, as the "computers were being upgraded" I called today, and now was told to call back in 3 weeks, after which the upgrade would be complete and my ff# could be added. They said I'd get the sign-up bonus miles, which I rightly should, but it still worries me they won't take my number. I'm sure you all know how this one goes when the time comes to get the bonus miles, "Well you're already an xxx customer, we can't offer you the sign-up miles..." Fingers are crossed.