Just woken up with a minor hangover (thanks to the MOO party) to hear the news that the Oyster card system has failed again & all the gates are open on the Tube, meaning free travel. Buses aren't affected this time. Now considering we were told the chances of this happening were slim and it's now happened twice in two weeks, shows that something's err ... wrong.
Pay as you go cards are borked today, so don't touch the readers with them, even if you see the gates open on the Tube.
So if you have an Oyster card listen out for more news and keep an eye on TfL's website - although at the time of writing 7.30am there's nowt, nada, nothing on the Transport for London site to show any problems. Perhaps they were all at the MOO party and are suffering a bit this morning too.