Org.Assignment Infotype start date and End date is getting wrong.

Hi, When i create a new employee in PA40, in Org. Assignment infotype start date and end date is getting wrong. for eg. When i create an employee on 01.04.2014. In org. assignment infotype its getting like this. 01.01.2014 to 31.03.9999 and 01.04.9999 to 31.12.9999 Two date entries are creating by default.