diff -Naur xfce4-session-4.10.0/xfce4-session/xfsm-systemd.c xfce4-session-4.10.0-magellan/xfce4-session/xfsm-systemd.c
--- xfce4-session-4.10.0/xfce4-session/xfsm-systemd.c	2012-10-20 16:27:39.774983068 +0200
+++ xfce4-session-4.10.0-magellan/xfce4-session/xfsm-systemd.c	2012-10-20 16:31:12.382983069 +0200
@@ -45,7 +45,7 @@
         proxy = g_new0 (SystemdProxy, 1);
 
         proxy->authority = polkit_authority_get_sync (NULL, NULL);
-        proxy->subject = polkit_unix_session_new_for_process_sync (getpid(), NULL, NULL);
+        proxy->subject = polkit_unix_process_new (getpid());
 
         return proxy;
 }
@@ -100,13 +100,13 @@
         GDBusConnection *bus;
 
         bus = g_bus_get_sync (G_BUS_TYPE_SYSTEM, NULL, NULL);
-        g_dbus_connection_call (bus,
-                                SYSTEMD_DBUS_NAME,
-                                SYSTEMD_DBUS_PATH,
-                                SYSTEMD_DBUS_INTERFACE,
-                                method,
-                                g_variant_new ("(b)", TRUE),
-                                NULL, 0, G_MAXINT, NULL, NULL, NULL);
+        g_dbus_connection_call_sync (bus,
+                                     SYSTEMD_DBUS_NAME,
+                                     SYSTEMD_DBUS_PATH,
+                                     SYSTEMD_DBUS_INTERFACE,
+                                     method,
+                                     g_variant_new ("(b)", TRUE),
+                                     NULL, 0, G_MAXINT, NULL, NULL);
         g_object_unref (bus);
 
         return TRUE;
@@ -114,10 +114,10 @@
 
 gboolean systemd_proxy_restart (SystemdProxy *proxy, GError **error)
 {
-	return systemd_proxy_method(proxy, "Restart", error);
+	return systemd_proxy_method(proxy, "Reboot", error);
 }
 
 gboolean systemd_proxy_shutdown (SystemdProxy *proxy, GError **error)
 {
-	return systemd_proxy_method(proxy, "Shutdown", error);
+	return systemd_proxy_method(proxy, "PowerOff", error);
 }