Betfair have made the following announcement:-
Please be aware that there is a planned maintenance scheduled for Tuesday 12th January 00:01 - 09:00 (GMT) during which time the site will be unavailable.
The web site is being taken down as part of an essential database maintenance.
For regular updates please visit our service information page at http://service.betfair.info
We would like to apologise for any inconvenience this may cause and assure you that we will do our best to complete this maintenance in time for the 20:20 Cricket.