Why is becoming very slow when I using php move_upload function

Why is becoming very slow when I using php move_upload function
mail ( string to, string subject, string message [, string additional_headers [, string additional_parameters]] )!?
some solution is solve it!?
http://www.kennam.com/english/contact.php


<?
$clientemail = $_POST['email'] ;
$myemail = "test@kennam.com";

$message     = $_POST['message'] ;
$companyname = $_POST['companyname'] ;
$personname  = $_POST['personname'] ;
$phone       = $_POST['phone'] ;
$fax         = $_POST['fax'] ;
$addr1       = $_POST['addr1'] ;
$addr2       = $_POST['addr2'] ;
$country     = $_POST['country'] ;
$htmlmessage = ereg_replace("\n", "<br/>", $message);
?>

<!------------it doesn't matter------------------>

<!-----------------------------------upload file  work fine--------------------------------------->

<?
if (empty($_FILES["uploadfile"])) {
//            echo 'the file is empty <br/>' ;
} else{
//            echo 'the file is not emptry<br/>';
}

 if(!empty($_FILES["uploadfile"])){
    $uploaddir = "/var/www/html/uploads/";
 // $_FILES['uploadfile']['name'];
      $source = $_FILES["uploadfile"]["tmp_name"];
   $destination =  $uploaddir . $_FILES["uploadfile"]["name"];

    if(move_uploaded_file($source, $destination)){
//            echo "Updated!";    
       }else{
            echo "There was a problem when uploding the new file";
            print_r($_FILES);
          }
  }
?>

<!-----------------------------------it's work----------------------------------------->


<!------------become slow------------------>
<!-----------------------------------TO CLIENT EMAIL----------------------------------------->
<?
$mailSubject = 'To ' . $companyname ;
   
$mailHeaders = "From : $myemail \r\n";
$mailHeaders.= "Content-Type: text/html; charset=big5 ";
$mailHeaders .= "MIME-Version: 1.0 ";

$mailBody  = "Dear $personname <br/><br/>";
$mailBody .= "Thanks for your enquiry <br/>";
$mailBody .= "We will reply this email as soon as possible <br/><br/><br/>";
$mailBody .= "Our Email : <a href='mailto:info@kennam.com'>info@kennam.com</a>, <a href='mailto:manager@kennam.com'>manager@kennam.com</a> <br/>";
$mailBody .= "Our Web site : <a href='http://www.kennam.com/'>http://www.kennam.com/</a> <br/>";
$mailBody .= "KEN NAM INDUSTRIAL LIMITED <br/><br/>"  ;
$mailBody .= "Best Regards, <br/><br/>";
$mailBody .= "C.K.SZE <br/>";

mail($clientemail, $mailSubject, $mailBody, $mailHeaders);
?>

<!----------------------------END OF TO CLIENT EMAIL (success)------------------------------->


<!------------become slow------------------>
<!-----------------------------------TO manager@kennam.com EMAIL----------------------------------------->

<?
$mailHeaders = "From: " . $clientemail . "\r\n";
$mailHeaders.= "Content-Type: text/html; charset=big5 ";
$mailHeaders .= "MIME-Version: 1.0 ";

$mailSubject = 'From :' . $companyname;

$mailBody  = "From : $companyname  <br/>";
$mailBody .= "Mr/Mrs/Ms $personname   <br/>";
$mailBody .= "Tel : $phone <br/>";
$mailBody .= "Fax : $fax   <br/>";
$mailBody .= "Address : $addr1 <br/>  $addr2  <br/>";

if (!($country == '?')) {
      $mailBody .= "Country : $country <br/>";       
}

$mailBody .= "Message : <br/><br/> $htmlmessage <br/>";

mail($myemail, $mailSubject, $mailBody, $mailHeaders);


//$attachments=Array(Array("file"=>$uploaddir . $_FILES["uploadfile"]["name"], "content_type"=>"multipart/alternative"));
//send_mail($myemail, $clientemail, $mailSubject . 'test' , $mailBody, $attachments);
?>

<!----------------------------END OF TO manager@kennam.com EMAIL (success)------------------------------->