--- a/mysqld_multi	2016-08-10 18:50:09.360984915 +0200
+++ b/mysqld_multi	2016-08-10 18:50:48.182695563 +0200
@@ -425,7 +425,6 @@
     $com= get_mysqladmin_options($i, @groups);
     $com.= " shutdown";
     $com.= " >> $opt_log 2>&1" if (!$opt_no_log);
-    $com.= " &";
     system($com);
   }
   if (!$i && !$opt_no_log)