Today was a contractor-free day, so I went to the British Library. Before I could request books, I needed to renew my card. One of the optional questions on the computerized renewal request form was my university. I couldn't answer the question: the form had been autorefreshed with a drop-down box based on the country I said I lived in.
They were only trying to be helpful, but it's another example of why writing a good form is difficult.