Index: moodle/admin/settings/appearance.php
--- moodle/admin/settings/appearance.php Base (1.68)
+++ moodle/admin/settings/appearance.php Locally Modified (Based On 1.68)
@@ -125,7 +125,7 @@
     $setting->set_updatedcallback('js_reset_all_caches');
     $temp->add($setting);
     $temp->add(new admin_setting_configcheckbox('disablecourseajax', get_string('disablecourseajax', 'admin'), get_string('configdisablecourseajax', 'admin'),
-                                                isset($CFG->disablecourseajax) ? 1 : empty($CFG->enableajax)));
+                                                0));
     $ADMIN->add('appearance', $temp);
 
     // link to tag management interface