diff --git a/admin/admin_ug_auth.php b/admin/admin_ug_auth.php
index a3d4bd646..af4896672 100644
--- a/admin/admin_ug_auth.php
+++ b/admin/admin_ug_auth.php
@@ -168,7 +168,7 @@ if ($mode == 'user' && (!empty($_POST['username']) || $user_id)) {
 
     if (!empty($_POST['username'])) {
         $this_userdata = get_userdata($_POST['username'], true);
-        $user_id = $this_userdata['user_id'];
+        $user_id = $this_userdata ? $this_userdata['user_id'] : false;
     } else {
         $this_userdata = get_userdata($user_id);
     }
diff --git a/dl.php b/dl.php
index dd3e5138a..0362682b6 100644
--- a/dl.php
+++ b/dl.php
@@ -41,6 +41,9 @@ function send_file_to_browser($attachment, $upload_dir)
     if (!str_contains($attachment['mimetype'], 'image')) {
         $attachment['mimetype'] = 'application/octet-stream';
     }
+    else {
+        header('Cache-Control: public, max-age=3600');
+    }
 
     //bt
     if (!(isset($_GET['original']) && !IS_USER)) {
@@ -150,7 +153,7 @@ if (!$authorised) {
 $datastore->rm('cat_forums');
 
 // Check tor status
-if (!IS_AM) {
+if (!IS_AM && str_contains($attachment['mimetype'], 'bittorrent')) {
     $sql = 'SELECT tor_status, poster_id FROM ' . BB_BT_TORRENTS . ' WHERE attach_id = ' . (int)$attachment['attach_id'];
 
     if (!($result = DB()->sql_query($sql))) {
diff --git a/filelist.php b/filelist.php
index 71d6f32a3..0fb88e814 100644
--- a/filelist.php
+++ b/filelist.php
@@ -93,6 +93,8 @@ echo <<<EOF
 <meta name="viewport" content="width=device-width, initial-scale=0.1, maximum-scale=1.0" />
 <meta name="robots" content="index" />
 <meta name="description" content="File listing for topic - $topic_id | {$data['name']} ({$data['size']})" />
+<meta property="og:description" content="File listing for topic - $topic_id | {$data['name']} ({$data['size']})" />
+<meta property="og:site_name" content="{$bb_cfg['sitename']}" />
 <meta name="generator" content="TorrentPier" />
 <meta name="version" content="{$bb_cfg['tp_version']}" />
 <link rel="shortcut icon" href="favicon.png" type="image/x-icon" />