How come my RSS feed doesn't always load?

[damicomj]

I am having trouble with my RSS script. It loads correctly in Safari, it is displayed as text in Chrome, it doesn't load in Internet Explorer, and it load every 3 or 4 refreshes in Firefox... it is very strange. Here is my code, it loads the data from a sql database. You can see the live page here: http://www.eventvt.com/rss.php

<?php
 
mysql_connect(DB_HOST, DB_USER, DB_PASS) or die(mysql_error());
mysql_select_db(DB_NAME) or die(mysql_error());
 
$sql = "SELECT id, title, text FROM TABLE order by id desc limit 15";
$result = mysql_query($sql) or die(mysql_error());
//$row = mysql_fetch_array($result);
 
 
while ($line = mysql_fetch_assoc($result))
        {
            $return[] = $line;
        }
 
$now = date("D, d M Y H:i:s T");
 
$output = "<?xml version=\"1.0\"?>
            <rss version=\"2.0\">
                <channel>
                    <title>eventVT RSS</title>
                    <link>http://www.eventvt.com/rss.php</link>
                    <description>New events in the Vermont area</description>
                    <language>en-us</language>
                    <pubDate>$now</pubDate>
                    <lastBuildDate>$now</lastBuildDate>
                    <docs>http://www.eventvt.com</docs>
                    <managingEditor>[e-mail]</managingEditor>
                    <webMaster>[e-mail]</webMaster>
            ";
 
foreach ($return as $line)
{
    $output .= "<item><title>".htmlentities($line['title'])."</title>
                    <link>http://www.eventvt.com/eventdisplay.php?id=".htmlentities($line['id'])."</link>
 
<description>".htmlentities(stripslashes($line['text']))."</description>
                </item>";
}
$output .= "</channel></rss>";
header("Content-Type: application/rss+xml");
echo $output;
?>