For several hours on Thursday afternoon, the front page of the BBC News website was slow to respond, sometimes displaying error messages. Other sections of the site were also affected at various times during the afternoon.
It's a rare event and it caused some comment on technical websites, and also theories about what might have happened - was the BBC changing its webserving providers? Was it a redesign problem? Was it "computer gods punishing us for iPlayer"?
Well although the investigations aren't fully complete, our technical team has confirmed the problems were triggered by a routine software deployment that had unforeseen consequences. To those who had trouble getting onto the site yesterday - apologies - nothing is more important to us than the reliability and resilience of our services and we are taking another hard look at our deployment, contingency and back up procedures.