I've previously mentioned that my Three internet connection dies a lot, in all sorts of ways. Last night was particularly interesting.
DNS worked fine (and in fact, was unusually fast). It was possible to (apparently) make connections to remote sites; said connections happily ignored anything sent through them, though. I suspect, possibly, that the connection from Three's traffic-shaping thing to the outside world died, or something of that nature.
Bah. The sooner I can get DSL, the better.