Tried to signup tonight for the third time. When I plugged in my details, it said I already had an account. So logged into it.
0 points and no activity. Supposedly that should change to 9000 within the next 3 days, or at least that's what the FT experts are saying. Others apparently saw the 9000 points pretty much straight away, so perhaps it has all gone wrong.
Edit: Logged out of my account on BMI, then re-clicked on the link from their homepage for the offer. Logged into my account on the offer screen, then confirmed all of my details again from what I had put in earlier and submitted. It then logged me into my BMI account with the following entry:
19/01/2008 BD Free Flight Offer - 9000 Miles Credit 0 0
19/01/2008 BD Free Flight Offer - 9000 Miles Credit 0 0
So according to the BMI experts, this will convert to 9000 points overnight/in the next few days.