--- a/ajax.php	Tue Dec 18 23:47:33 2007 -0500
+++ b/ajax.php	Wed Dec 19 17:15:48 2007 -0500
@@ -104,6 +104,10 @@
       {
         echo $src;
       }
+      else if ( $src !== false )
+      {
+        echo '';
+      }
       else
       {
         echo 'err_access_denied';

--- a/includes/functions.php	Tue Dec 18 23:47:33 2007 -0500
+++ b/includes/functions.php	Wed Dec 19 17:15:48 2007 -0500
@@ -2418,6 +2418,20 @@
 
 function sanitize_page_id($page_id)
 {
+  global $db, $session, $paths, $template, $plugins; // Common objects
+  
+  if ( isset($paths->nslist['User']) )
+  {
+    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) )
+      {
+        return $page_id;
+      }
+    }
+  }
+  
   // Remove character escapes
   $page_id = dirtify_page_id($page_id);
 
@@ -2448,7 +2462,7 @@
     else
       $page_id_cleaned .= $pid_dirty[$id];
   }
-
+  
   // global $mime_types;
 
   // $exts = array_keys($mime_types);
@@ -2472,17 +2486,9 @@
   $page_id = str_replace(' ', '_', $page_id);
 
   // Exception for userpages for IP addresses
-  if ( isset($paths->nslist['User']) )
+  if ( is_valid_ip($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;
-      }
-    }
+    return $page_id;
   }
 
   preg_match_all('/\.[A-Fa-f0-9][A-Fa-f0-9]/', $page_id, $matches);
@@ -2495,7 +2501,7 @@
     $char = chr($char);
     $page_id = str_replace($matches[0][$id], $char, $page_id);
   }
-
+  
   return $page_id;
 }
 

--- a/includes/pageprocess.php	Tue Dec 18 23:47:33 2007 -0500
+++ b/includes/pageprocess.php	Wed Dec 19 17:15:48 2007 -0500
@@ -330,6 +330,10 @@
     {
       return false;
     }
+    if ( !$this->page_exists )
+    {
+      return '';
+    }
     return $this->fetch_text();
   }
   

--- a/includes/paths.php	Tue Dec 18 23:47:33 2007 -0500
+++ b/includes/paths.php	Wed Dec 19 17:15:48 2007 -0500
@@ -342,7 +342,7 @@
       $pid_cleaned = sanitize_page_id($this->page);
       if ( $pid_cleaned != $this->page )
       {
-        redirect($pid_cleaned, 'Sanitizer message', 'page id sanitized', 0);
+        redirect(makeUrl($pid_cleaned), 'Sanitizer message', 'page id sanitized', 0);
       }
       
       if ( !is_array($this->cpage) )
@@ -376,6 +376,7 @@
         }
       }
       $this->namespace = $this->cpage['namespace'];
+      $this->page_id =& $this->cpage['urlname_nons'];
       
       if($this->namespace=='System') 
       {
@@ -1009,5 +1010,5 @@
   }
   
 }
-  
+
 ?>