This could be a serious problem - not because of the idea that children could see this material but because it's a rare occurrence which could cause catastrophic results: censorship.
Carl Davidson, Carlisle, Cumbria I am not surprised at what happened.
True, there's porn on millions of sites which children could easily have access to, but there is a significant difference between that and interest groups purposely tricking and delivering porn to children in a Hannah Montana package on YouTube.