--- sites/all/modules/porterstemmer/porterstemmer.module	2005-12-17 23:43:02.000000000 +0100
+++ sites/all/modules/porterstemmer/porterstemmer_engonly.module	2009-03-14 18:25:53.890625000 +0100
@@ -11,6 +11,9 @@
 * Implementation of hook_search_preprocess
 */
 function porterstemmer_search_preprocess(&$text) {
+				global $language;
+				if (substr($language->language,0,2) == "en") {  # if the current user display language is "en" (English)
+
   // Split words from noise and remove apostrophes
   $words = preg_split('/([^a-zA-Z]+)/', str_replace("'", '', $text), -1, PREG_SPLIT_DELIM_CAPTURE);
 
@@ -22,9 +25,10 @@ function porterstemmer_search_preprocess
     }
     $odd = !$odd;
   }
-
   // Put it all back together
-  return implode('', $words);
+  return implode('', $words);		# return value if the current user display is English
+}
+  return $text;		# return the inputted text if the current user display is not English
 }
 
 /**