--- ed_readmore.module.orig	2010-10-24 13:29:01.055547490 +0300
+++ ed_readmore.module	2010-10-24 13:37:30.939815442 +0300
@@ -66,6 +66,11 @@ function _ed_readmore_place_readmore_lin
 
 
 function ed_readmore_nodeapi(&$node, $op, $teaser, $page) {
+  // Don't process anything unless we are on 'rss item' or 'view' operations.
+  if (!in_array($op, array('rss item', 'view'))) {
+    return;
+  }
+
   $enabled = variable_get('ed_readmore_readmore_tweak', 1);
   $inlineflag = variable_get('ed_readmore_readmore_inline', 1);
   $strong = variable_get('ed_readmore_readmore_strong', 1);