Kolab 3.0 - error during user creation in kolab-webadmin

[Dirk Werner]

Hi,
on a fresh installed kolab 3.0 on centOs6.3 I'm getting the following
error when creating a new user with kolab-webadmin, more precise, when
defining users role as kolab-admin. pykolab.log is empty but I haven't
changed debug level yet :

Process Kolab(airwerk.com):
Traceback (most recent call last):
  File "/usr/lib64/python2.6/multiprocessing/process.py", line 232, in
_bootstrap
    self.run()
  File "/usr/lib64/python2.6/multiprocessing/process.py", line 88, in run
    self._target(*self._args, **self._kwargs)
  File "/usr/lib/python2.6/site-packages/kolabd/process.py", line 42, in
synchronize
    auth.synchronize()
  File "/usr/lib/python2.6/site-packages/pykolab/auth/__init__.py", line
239, in synchronize
    self._auth.synchronize()
  File "/usr/lib/python2.6/site-packages/pykolab/auth/ldap/__init__.py",
line 857, in synchronize
    callback=self._synchronize_callback,
  File "/usr/lib/python2.6/site-packages/pykolab/auth/ldap/__init__.py",
line 2113, in _search
    secondary_domains
  File "<string>", line 10, in <module>
  File "/usr/lib/python2.6/site-packages/pykolab/auth/ldap/__init__.py",
line 1868, in _persistent_search
    secondary_domains=secondary_domains
  File "/usr/lib/python2.6/site-packages/pykolab/auth/ldap/__init__.py",
line 1719, in _synchronize_callback
    entry['type']
  File "<string>", line 1, in <module>
  File "/usr/lib/python2.6/site-packages/pykolab/auth/ldap/__init__.py",
line 1079, in _change_add_user
    entry[mailserver_attribute]
  File "/usr/lib/python2.6/site-packages/pykolab/imap/__init__.py", line
373, in user_mailbox_create
    additional_folders
  File "/usr/lib/python2.6/site-packages/pykolab/imap/__init__.py", line
413, in user_mailbox_create_additional_folders
    additional_folders[additional_folder]['quota']
  File "/usr/lib/python2.6/site-packages/cyruslib.py", line 638, in sq
    res, msg = self.__docommand("setquota", self.decode(mailbox), limit)
  File "/usr/lib/python2.6/site-packages/cyruslib.py", line 391, in
__docommand
    self.__doexception(function, msg[0], *args)
  File "/usr/lib/python2.6/site-packages/cyruslib.py", line 359, in
__doexception
    self.__doraise( function.upper(), msg )
  File "/usr/lib/python2.6/site-packages/cyruslib.py", line 368, in
__doraise
    raise CYRUSError( idError[0], mode, msg )
CYRUSError: (40, 'SETQUOTA', 'Permission denied')

Any idea?
Best regards
Dirk