--- views_fastsearch.module	2008-04-24 10:36:46.000000000 +0100
+++ views_fastsearch.new	2008-04-24 10:42:07.000000000 +0100
@@ -491,6 +491,8 @@ function _views_fastsearch_query(&$query
 
   // there are dups in the index so we need distinct results
   $query->set_distinct();
+  // Search only on node search index entries, as we can't predict how extensions to the search will use sid
+  $query->add_where('(search_index.type=\'node\')', array());
 }
 
 /**