I have problem about Freeradius0.7 that started for 1 day. I got message ....

rlm_ldap: - authorize
rlm_ldap: performing user authorization for xxxxx
radius_xlat: '(uid=xxxxx)'
radius_xlat: 'ou=people,dc=xx,dc=xx,dc=xx,o=internet'
rlm_ldap: All ldap connections are in use
modcall[authorize]: module "ldap" returns fail
modcall: group authorize returns fail