samba - Oct 2009 - openldap error messages after upgrade 3.3.6 -> 3.4.2

Hi,

I just upgraded Samba from 3.3.6 to 3.4.2. We use it as PDC with 
OpenLDAP 2.4.19. After the upgrade, I see occasional log messages coming 
from OpenLDAP like:

Oct 16 16:19:31 selene slapd[10158]: conn=71 op=2 do_search: invalid dn 
(sambaDomainName=,sambaDomainName=WZB,ou=accounts,dc=wzb,dc=eu)

There were no such messages with 3.3.6.

So far, it doesn't seem to cause problems, but who knows.

Any idea what could be causing this?


Peter