Yet another example of showing secret papers to the public (via photographers, naturally) has emerged today. It will be interesting to see if a resignation follows. As a Minister of the Realm, I will place safe money on the outcome - Hazel Blears will not resign (though she can prove me wrong if she wants to!)
When on a long distance flight there is always the concern that bringing out work will compromise any secrecy that may be necessary (I sign confidentiality agreements all the time). The first thought is "I wonder what he/she sitting next to me does for a living - could he/she work for a competitor?"
That's why some of us use shredding machines, file folders, etc. etc.