just had this email from betfair
We wanted to let you know that due to planned site maintenance and upgrade work, all Betfair products will be unavailable from:
00:01 GMT on Monday 31st January.
This planned work is expected to last for several hours. During this time Betfair.com, including our sports exchange, casino, arcade, poker, API and mobile products, will be unavailable.
We have planned this work around the end of key sporting events on Sunday 30th January and with the aim of having the Exchange back up and running in time for the start of UK Horseracing on the afternoon of Monday 31st January (GMT). Please be aware, that while we will be doing our best to have the sports exchange operational again on Monday afternoon, it is anticipated that all other products such as poker, casino and arcade will continue to be unavailable until later on that day.
The upgrade work is being undertaken to bring long-term benefits to our customers and we will be working hard to get normal service resumed on the site as quickly as possible.
We"d like to apologise in advance for any inconvenience caused.