Index: management/univention-directory-manager-modules/modules/univention/admin/uldap.py
===================================================================
--- management/univention-directory-manager-modules/modules/univention/admin/uldap.py	(Revision 57088)
+++ management/univention-directory-manager-modules/modules/univention/admin/uldap.py	(Arbeitskopie)
@@ -123,6 +123,7 @@
 			if mytype=='dc':
 				self.__indomain=1
 				break
+
 	def getDn(self):
 		if self.__getPosition():
 			dn=self.__pos+","+self.__base
@@ -129,20 +130,21 @@
 		else:
 			dn=self.__base
 		return dn
-	def setDn(self, dn):
+
+	def setDn(self, dn, case_sensitive_base=True):
 		try:
 			self.__indomain=0
 			baselist=explodeDn(self.getBase())
 			baselist.reverse()
 			dnlist=explodeDn(dn)
-			dnlist.reverse()
-			baselist.reverse()
 			for i in baselist:
-				dnlist.remove(i)
-			dnlist.reverse()
+				if case_sensitive and dnlist[-1] != i:
+					raise ValueError
+				elif dnlist[-1].lower() != i.lower():
+					raise ValueError
+				dnlist.pop()
 			self.__pos=string.join(dnlist, ',')
-			components=explodeDn(self.__pos,0)
-			for i in components:
+			for i in dnlist:
 				mytype, ign = string.split(i,'=')
 				if mytype=='dc':
 					self.__indomain=1
Index: services/univention-ad-connector/modules/univention/connector/__init__.py
===================================================================
--- services/univention-ad-connector/modules/univention/connector/__init__.py	(Revision 57088)
+++ services/univention-ad-connector/modules/univention/connector/__init__.py	(Arbeitskopie)
@@ -1245,7 +1245,7 @@
 
 		ud.debug(ud.LDAP, ud.INFO,
 				       'sync_to_ucs: set position to %s' % string.join( ldap.explode_dn( object['dn'] )[1:], "," ) )
-		position.setDn( string.join( ldap.explode_dn( object['dn'] )[1:], "," ) ) 
+		position.setDn( string.join( ldap.explode_dn( object['dn'] )[1:], "," ), case_sensitive_base=False) 
 
 		try:
 			result = False
Index: services/univention-s4-connector/modules/univention/s4connector/__init__.py
===================================================================
--- services/univention-s4-connector/modules/univention/s4connector/__init__.py	(Revision 57088)
+++ services/univention-s4-connector/modules/univention/s4connector/__init__.py	(Arbeitskopie)
@@ -1028,7 +1028,7 @@
 
 					ucs_module = self.modules[property_type]
 					position=univention.admin.uldap.position(self.lo.base)
-					position.setDn(object['dn'])
+					position.setDn(object['dn'], case_sensitive_base=False)
 					univention.admin.modules.init(self.lo,position,ucs_module)
 					
 					if hasattr(ucs_module, 'ldap_extra_objectclasses'):
@@ -1088,7 +1088,7 @@
 				if ucs_object.has_key(ucs_key):
 					ucs_module = self.modules[property_type]
 					position=univention.admin.uldap.position(self.lo.base)
-					position.setDn(object['dn'])
+					position.setDn(object['dn'], case_sensitive_base=False)
 					univention.admin.modules.init(self.lo,position,ucs_module)
 
 					# Special handling for con other attributes, see Bug #20599
@@ -1355,7 +1355,7 @@
 
 		if object['dn'].lower() != self.baseConfig['ldap/base'].lower():
 			try:
-				position.setDn( string.join( ldap.explode_dn( object['dn'] )[1:], "," ) ) 
+				position.setDn( string.join( ldap.explode_dn( object['dn'] )[1:], "," ), case_sensitive_base=False) 
 				ud.debug(ud.LDAP, ud.INFO,
 							   'sync_to_ucs: set position to %s' % string.join( ldap.explode_dn( object['dn'] )[1:], "," ) )
 			except univention.admin.uexceptions.noObject: