diff -up authconfig-6.2.6/authinfo.py.nolastlog authconfig-6.2.6/authinfo.py
--- authconfig-6.2.6/authinfo.py.nolastlog	2013-05-13 15:37:35.000000000 +0200
+++ authconfig-6.2.6/authinfo.py	2013-06-12 17:08:04.787899399 +0200
@@ -418,7 +418,7 @@ argv_succeed_if_not_gdm = [
 
 argv_lastlog_gdm = [
 	"nowtmp",
-	"showfailed"
+	"silent"
 ]
 
 argv_lastlog_not_gdm = [