[turba] problem with turba

[Daniel Geldres Castro]

gentlemen I have a doubt I have installed horde + imp + disturbs, I have
created 2 users, first Daniel is called and the other david. 

Good the subject is following, when david this logeado in the webmail
and registers a contact in in the agenda, this contact also can see the
user it loguea Daniel when and list its contacts. 

Some suggestion or some idea of which this happening? 

Greetings