Dear macropod, thank you very-very much for your explanation. It becomes clear, that date-time field is really unreliable. But what is known about the "Author" field - is it possible to change it at any time as well as a person field, who changed the document later? Or the first field (Author) is protected from user's resetting in word-2003 and modified-by field is not (protected)?
Great thanks in advance!!