diff -urN cacti-0.8.7a.orig/include/global.php cacti-0.8.7a/include/global.php
--- cacti-0.8.7a.orig/include/global.php	2007-12-03 16:15:52.000000000 +0100
+++ cacti-0.8.7a/include/global.php	2007-12-03 16:21:36.000000000 +0100
@@ -191,7 +191,7 @@
 error_reporting(E_ALL);
 
 /* include base modules */
-include($config["library_path"] . "/adodb/adodb.inc.php");
+include('/usr/share/php/adodb/adodb.inc.php');
 include($config["library_path"] . "/database.php");
 include_once($config["library_path"] . "/functions.php");
 include_once($config["include_path"] . "/global_constants.php");