diff -r 112debff64bd -r 5f1cd51bf1be includes/functions.php
--- a/includes/functions.php	Sat Dec 15 18:10:14 2007 -0500
+++ b/includes/functions.php	Tue Dec 18 23:44:55 2007 -0500
@@ -565,7 +565,7 @@
     $q = $db->sql_query('SELECT p.urlname, p.namespace, p.name, p.namespace=\'Category\' AS is_category FROM '.table_prefix.'categories AS c
                            LEFT JOIN '.table_prefix.'pages AS p
                              ON ( p.urlname = c.page_id AND p.namespace = c.namespace )
-                           WHERE c.category_id=\'' . $db->escape($paths->cpage['urlname_nons']) . '\'
+                           WHERE c.category_id=\'' . $db->escape($paths->page_id) . '\'
                            ORDER BY is_category DESC, p.name ASC;');
     if ( !$q )
     {
@@ -677,7 +677,7 @@
     echo '</div>';
     echo '<div id="mdgCatBox">Categories: ';
     
-    $where = '( c.page_id=\'' . $db->escape($paths->cpage['urlname_nons']) . '\' AND c.namespace=\'' . $db->escape($paths->namespace) . '\' )';
+    $where = '( c.page_id=\'' . $db->escape($paths->page_id) . '\' AND c.namespace=\'' . $db->escape($paths->namespace) . '\' )';
     $prefix = table_prefix;
     $sql = <<<EOF
 SELECT c.category_id FROM {$prefix}categories AS c
@@ -729,11 +729,11 @@
 {
   global $db, $session, $paths, $template, $plugins; // Common objects
   if($paths->namespace != 'File') return null; // Prevent unnecessary work
-  $selfn = $paths->cpage['urlname_nons']; // substr($paths->page, strlen($paths->nslist['File']), strlen($paths->cpage));
-  if(substr($paths->cpage['name'], 0, strlen($paths->nslist['File']))==$paths->nslist['File']) $selfn = substr($paths->cpage['urlname_nons'], strlen($paths->nslist['File']), strlen($paths->cpage['urlname_nons']));
+  $selfn = $paths->page_id; // substr($paths->page, strlen($paths->nslist['File']), strlen($paths->cpage));
+  if(substr($paths->cpage['name'], 0, strlen($paths->nslist['File']))==$paths->nslist['File']) $selfn = substr($paths->page_id, strlen($paths->nslist['File']), strlen($paths->page_id));
   $q = $db->sql_query('SELECT mimetype,time_id,size FROM '.table_prefix.'files WHERE page_id=\''.$selfn.'\' ORDER BY time_id DESC;');
   if(!$q) $db->_die('The file type could not be fetched.');
-  if($db->numrows() < 1) { echo '<div class="mdg-comment" style="margin-left: 0;"><h3>Uploaded file</h3><p>There are no files uploaded with this name yet. <a href="'.makeUrlNS('Special', 'UploadFile/'.$paths->cpage['urlname_nons']).'">Upload a file...</a></p></div><br />'; return; }
+  if($db->numrows() < 1) { echo '<div class="mdg-comment" style="margin-left: 0;"><h3>Uploaded file</h3><p>There are no files uploaded with this name yet. <a href="'.makeUrlNS('Special', 'UploadFile/'.$paths->page_id).'">Upload a file...</a></p></div><br />'; return; }
   $r = $db->fetchrow();
   $mimetype = $r['mimetype'];
   $datestring = date('F d, Y h:i a', (int)$r['time_id']);
@@ -2418,7 +2418,6 @@
 
 function sanitize_page_id($page_id)
 {
-
   // Remove character escapes
   $page_id = dirtify_page_id($page_id);
 
@@ -2473,11 +2472,17 @@
   $page_id = str_replace(' ', '_', $page_id);
 
   // Exception for userpages for IP addresses
-  if ( preg_match('/^' . preg_quote($paths->nslist['User']) . '/', $page_id) )
+  if ( isset($paths->nslist['User']) )
   {
-    $ip = preg_replace('/^' . preg_quote($paths->nslist['User']) . '/', '', $page_id);
-    if ( is_valid_ip($ip) )
-      return $page_id;
+    if ( preg_match('/^' . preg_quote($paths->nslist['User']) . '/', $page_id) )
+    {
+      $ip = preg_replace('/^' . preg_quote($paths->nslist['User']) . '/', '', $page_id);
+      if ( is_valid_ip($ip) )
+      {
+        die('valid IP');
+        return $page_id;
+      }
+    }
   }
 
   preg_match_all('/\.[A-Fa-f0-9][A-Fa-f0-9]/', $page_id, $matches);