always use two digits for month, day, and minutes

bureau/admin/main.php

@@ -40,7 +40,7 @@ include("head.php");
 // Show last login information : 
 __("Last Login: ");
 
-echo format_date('the %3$d-%2$d-%1$d at %4$d:%5$d',$mem->user["lastlogin"]);
+echo format_date('the %3$d-%2$02d-%1$02d at %4$d:%5$02d',$mem->user["lastlogin"]);
 printf("&nbsp;"._('from: <code> %1$s </code>')."<br />",$mem->user["lastip"]);
 
 if ($mem->user["lastfail"]) {