This morning I started writing an email but I kept getting called away and so it took over an hour to complete. The message went Ok and appears in my sent folder. However, there are now 4 iterations of it, all with different time stamps and containing the message contents at each particular stage of the draft in my All Mail folder right up to and including the one that was sent. Clearly it isn't really desirable to have these saved so before I delete them have you any idea what (if anything) has gone wrong?