[Resolvido] Problema com cookie...

Ele estava funcionando normalmente...

até eu usar um logout...

logar.php

1. <?php
2. require_once("config.php");

3.

4. $log=trim($_POST['login']);
5. $sen=trim($_POST['senha']);

6.

7. $y = mysql_query("SELECT * FROM usuario WHERE login='$log' and password='$sen'");
8. $x = mysql_fetch_array($y);
9. $sid=$x['id'];
10. $login=$x['login'];
11. $senha=$x['password'];

12.

13. if($sid==""){
14. echo "<script>alert('Login e/ou Senha Incorreros');</script>";
15. echo "<script language='javaScript'>window.location.href='login.php'</script>";

16. } else {

17.	$texto=$login.";".$senha.";".$sid;
18.	$cookiesave=setcookie('login',$texto,time()+3600*48);
19.	if($cookiesave){
20. echo "<script language='javaScript'>window.location.href='index.php'</script>";

21. } 22. } 23. ?>

logout.php

1. <?php
2. setcookie("login","", time() - 1);
3. echo "<script language='javaScript'>window.location.href='login.php'</script>";
4. ?>

o problema é

Warning: Cannot modify header information - headers already sent by (output started at E:\config.php:1) in E:\logar.php on line 18