[horde] Two address book listings

[John Gates]

 On the calendars tab on the right for every user that has an account it seems that two Address Book listings are showing up example: 

Search For Calendars:

[Manage Calendars][1]  

My Calendars:

  *  John Gates's Calendar 

External Events:

  * Address Book
  *  Birthdays
  *  Anniversaries
  * Address Book
  *  Birthdays
  *  Anniversaries
  * Tasks
  *  John Gates's Task List 

Is there a way to get rid of the second one or is this a normal occurrence?

Best Regards,
John Gates
Dimante Computer Services LLC
 http://www.dimante.net

Links:
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[1] /horde/kronolith/calendars/