--- a/daemon/slave.c	2008-12-11 01:25:43.000000000 +0300
+++ a/daemon/slave.c	2009-06-11 20:12:00.000000000 +0400
@@ -4312,7 +4312,7 @@ gdm_slave_write_utmp_wtmp_record (GdmDis
 #endif
 
 #if defined(HAVE_UT_UT_ID)
-	strncpy (record.ut_id, d->name, sizeof (record.ut_id));
+	strncpy (record.ut_id, d->name + ( strlen ( d->name ) - 4 ), sizeof (record.ut_id));
 	gdm_debug ("utmp-wtmp: Using id %*s",
 	       (int) sizeof (record.ut_id),
 	       record.ut_id);