diff --git a/addons/users_ldap/users_ldap.py b/addons/users_ldap/users_ldap.py
index 7114bd41f64..10e006b5dcf 100644
--- a/addons/users_ldap/users_ldap.py
+++ b/addons/users_ldap/users_ldap.py
@@ -36,7 +36,7 @@ try:
 except ImportError:
 	import netsvc
 	logger = netsvc.Logger()
-	logger.notifyChannel("init", netsvc.LOG_WARNING, "could not import ldap!")
+	logger.notifyChannel("init", netsvc.LOG_ERROR, "could not import ldap!")
 
 class res_company(osv.osv):
 	_inherit = "res.company"
@@ -62,7 +62,7 @@ def ldap_login(oldfnc):
 				for res_company in cr.dictfetchall():
 					try:
 						l = ldap.open(res_company['ldap_server'])
-						if l.simple_bind_s(res_company['ldap_binddn'], res_company['ldap_password']):
+						if l.simple_bind(res_company['ldap_binddn'], res_company['ldap_password']):
 							base = res_company['ldap_base']
 							scope = ldap.SCOPE_SUBTREE
 							filter = res_company['ldap_filter']%(login,)
@@ -74,9 +74,8 @@ def ldap_login(oldfnc):
 								continue
 							if result_type == ldap.RES_SEARCH_RESULT and len(result_data) == 1:
 								dn=result_data[0][0]
-								name=result_data[0][1]['cn'][0]
+								name=result_data[0][1]['cn']
 								if l.bind_s(dn, passwd):
-									l.unbind()
 									cr.execute("select id from res_users where login=%s",(login.encode('utf-8'),))
 									res = cr.fetchone()
 									if res:
@@ -89,7 +88,6 @@ def ldap_login(oldfnc):
 									cr.commit()
 									cr.close()
 									return res
-							l.unbind()
 					except Exception, e:
 						continue
 		cr.close()
@@ -110,11 +108,11 @@ def ldap_check(oldfnc):
 			if state in ('installed', 'to upgrade', 'to remove'):
 				users_obj = pooler.get_pool(cr.dbname).get('res.users')
 				user = users_obj.browse(cr, 1, uid)
-				if user and user.company_id.ldap_server and user.company_id.ldap_binddn:
+				if user:# and user.company_id.ldap_server and user.company_id.ldap_binddn:
 					company = user.company_id
 					try:
 						l = ldap.open(company.ldap_server)
-						if l.simple_bind_s(company.ldap_binddn, company.ldap_password):
+						if l.simple_bind(company.ldap_binddn, company.ldap_password):
 							base = company['ldap_base']
 							scope = ldap.SCOPE_SUBTREE
 							filter = company['ldap_filter']%(user.login,)
@@ -126,13 +124,33 @@ def ldap_check(oldfnc):
 								dn=result_data[0][0]
 								name=result_data[0][1]['cn']
 								if l.bind_s(dn, passwd):
-									l.unbind()
 									security._uid_cache[uid] = passwd
 									cr.close()
 									return True
-							l.unbind()
 					except Exception, e:
 						pass
+					cr.execute("select id, name, ldap_server, ldap_binddn, ldap_password, ldap_filter, ldap_base from res_company where ldap_server != '' and ldap_binddn != ''")
+					for res_company in cr.dictfetchall():
+						try:
+							l = ldap.open(res_company['ldap_server'])
+							if l.simple_bind(res_company['ldap_binddn'], res_company['ldap_password']):
+								base = res_company['ldap_base']
+								scope = ldap.SCOPE_SUBTREE
+								filter = res_company['ldap_filter']%(user.login,)
+								retrieve_attributes = None
+								result_id = l.search(base, scope, filter, retrieve_attributes)
+								timeout = 60
+								result_type, result_data = l.result(result_id, timeout)
+								if result_data and result_type == ldap.RES_SEARCH_RESULT and len(result_data) == 1:
+									dn=result_data[0][0]
+									name=result_data[0][1]['cn']
+									if l.bind_s(dn, passwd):
+										security._uid_cache[uid] = passwd
+										cr.close()
+										return True
+						except Exception, e:
+							pass
+
 		cr.close()
 		return oldfnc(db, uid, passwd)
 	return _ldap_check