Clients creates folders

[Jörg Kruse]

Dear all,

i am using cyrus-imapd-2.3.11-60.65.64.1 with saslauth against LDAP.
In my installation the apple imap clients create new folder as new 
mailboxes.
The are created in the level of partion default - the mailboxes are in 
partion-default/user/.
The crreted mailboxes have :
-localhost> listacl probe1354832348536
-anyone lrs
  where the number is the unix timestamp.
I tried with "anyoneuseracl: no" with no succes.

Any idea what happens here ?? and how to prevent it ??

Thanks

Jorg