It has led to the downfall of many. Now the UK government is arranging the deletion of millions of e-mails. But is it really as easy as hitting a button on the keyboard? E-mail has a long memory, as former home secretary David Blunkett can confirm. Forced to quit last week after e-mails containing damaging information were discovered, he is the latest in the long line of people to be haunted by cyber mail. It has now emerged that civil servants are being told to destroy millions of e-mails. The government says it is in the cause of good information management, but some people have pointed out that in a fortnight’s time, they will become publicly accessible under freedom of information legislation. However, as many have discovered, it is not as easy as hitting the delete key…