[horde] An appointment can not deleted

[Ralph Ballier]

  A user has entered an appointment. He has accidentally entered a  
start time, which occurred many years ago. This date can not be  
called. If you click it, the circumferential points can be seen. More  
does not happen. What can he do?

Ralph
  Ralph Ballier    Abteilungsleiter an der
   Lise-Meitner-Schule
   Rudower Straße 184
   12351 Berlin
   Tel.: +49 30 660689-25/-24/-0