I noticed an odd thing on my way home from work on Monday night. The data connectivity on my iPhone (which I tend to use continuously on train commutes) just died. I arrived home, hopped on the wifi and forgot about it. But there is an explanation:

> “It was very hot yesterday and the airconditioning at our datacentre in Croydon failed,” said Bob Dunn, general manager of customer experience at O2. “It had to be cooled down, and there was a network outage in London.”

Slightly startling that the connections we have come to rely on are so dependent on airconditioning…