[horde] Problem with Turba permissions

[lst_hoe02 at kwsoft.de]

Hello,

we have beside the personal SQL addressbooks some read only and some  
protected addressbooks which should only be readable by a Horde Group.  
To my knowledge this has worked in the past, but today i discovered  
that a user not member of the correct group can list addressbooks  
he/she should not have access to. This only apply to the list-mode,  
when clicking on the contact to get the details the message "contact  
not found" is shown.

Any idea how to debug this?

Thanks

Andreas