Index: /home/lew/public_html/wp-includes/query.php
===================================================================
--- /home/lew/public_html/wp-includes/query.php (revision 26757)
+++ /home/lew/public_html/wp-includes/query.php (working copy)
@@ -3271,7 +3271,7 @@
                }
            } elseif ( $this->is_tag ) {
                $term = get_term( $this->get( 'tag_id' ), 'post_tag' );
-           } elseif ( $query['terms'] ) {
+           } elseif ( $this->is_tax ) {
                $tax_query_in_and = wp_list_filter( $this->tax_query->queries, array( 'operator' => 'NOT IN' ), 'NOT' );
                $query = reset( $tax_query_in_and );