[PHP] problem s hlavickama

[KtK]

este bych mel dalsi dotaz...
pokud mam

session_start();
MySQL_Query("UPDATE download SET pocet_stazeni=pocet_stazeni+1 WHERE id='".$_GET[id]."'");
header("Content-type: octet/stream");
header("Content-Disposition: attachment; filename=".$_GET[filename]);
readfile("download/".$_GET[filename]);


jak mam udelat aby mi to nehazelo chybu s hlavickama

..a neda si rict, a neda si rict. Co takhle se podelit o tu chybovou hlasku?