srihari3d 0 Newbie Poster

error:...cannot send session cache limiter...
headers already sent by php....can any one give me the solution?..........when ever login with username & password...the session is not stored in the first time....but the next time login the session is stored with the username....what is the prblm?.....i m sending code also......

<?ob_start();
session_start();?>
<?php
$_SESSION=$_POST["username"];
if($_SESSION=="")
$ssusername= $_SESSION;
else
$ssusername= $_SESSION;
Header("Location: ./profile.php");
if($ssusername=="")
require "serverbusy.html";
//session_register("ssusername");
?>
please give me the reply.........
i m waiting for that............