The Betfair breach is the 12th breach of 1M+ this year
The recent data breach at on-line gambling web site Betfair that exposed sensitive data of 3.15 million users is actually the twelfth breach so far this year that exposed one million or more records. Breaches that big seem to be getting so common that they're almost not newsworthy any more.
I haven't been following Betfair, but they seem to have had other security problems in the past. Page 43 of their 2011 Annual Report says this:
Not withstanding Betfair's IT and data security and other systems, it has experienced a limited number of security breaches in the past (which have not had a significant effect on Betfair's reputation, operations, financial performance and prospects and in respect of which remedial action has been taken).