I have discovered this myself, and I personally just rebuild from my own
slapd.conf. I just took a look at the debian/slapd.conf template file in
squeeze, which presumably is what the package installation uses to
ultimately generate the slapd.d config backend. I've copied it here:
http://web.olp.net/dwhite/openldap/slapd-squeeze-default.conf
This config is missing two pretty important items in my opinion:
authz-regexp
"gidNumber=0\\\+uidNumber=0,cn=peercred,cn=external,cn=auth"
"cn=admin,@SUFFIX@"
and
database config
rootdn "cn=admin,@SUFFIX@"
See:
http://www.openldap.org/lists/openldap-technical/201101/msg00047.html