Date Problems

The date field, although it now takes dates older than 1970, still screw up the day values for older dates. ex: entering 1936-12-13, renders 1936-12-12 and the edit window now shows 1936-12-11 and 1957-07-11 became 1937-07-07 and the edit form shows 1957-07-05 !!! How can this get fixed? Try this node: http://ismaili.nixx.ca/drupal5/node/1689 birth date should be 1936-12-13 important date should be 1957-07-11