Okay, I've checked it. I do have that feature but it doesn't show in users/index.php. And what is this code use for "($brth ?"?
($brth
? '<br /><img src="../images/award.png" width="16" height="16" /> <a href="index.php?act=birth">' . $lng['birthday_men'] . '</a> (' . $brth . ')'
: '') .