Index: lib/moodlelib.php
===================================================================
RCS file: /cvsroot/moodle/moodle/lib/moodlelib.php,v
retrieving revision 1.960.2.15
diff -u -r1.960.2.15 moodlelib.php
--- lib/moodlelib.php	4 Dec 2007 11:46:12 -0000	1.960.2.15
+++ lib/moodlelib.php	4 Dec 2007 15:11:47 -0000
@@ -4944,17 +4944,17 @@
     global $CFG;
 
 /// originally these special strings were stored in moodle.php now we are only in langconfig.php
-    $langconfigstrs = array('alphabet', 'backupnameformat', 'decsep', 'firstdayofweek', 'listsep', 'locale',
-                            'localewin', 'localewincharset', 'oldcharset',
-                            'parentlanguage', 'strftimedate', 'strftimedateshort', 'strftimedatetime',
-                            'strftimedaydate', 'strftimedaydatetime', 'strftimedayshort', 'strftimedaytime',
-                            'strftimemonthyear', 'strftimerecent', 'strftimerecentfull', 'strftimetime',
-                            'thischarset', 'thisdirection', 'thislanguage');
+    static $langconfigstrs = array('alphabet'=>1, 'backupnameformat'=>1, 'decsep'=>1, 'firstdayofweek'=>1, 'listsep'=>1, 'locale'=>1,
+                            'localewin'=>1, 'localewincharset'=>1, 'oldcharset'=>1,
+                            'parentlanguage'=>1, 'strftimedate'=>1, 'strftimedateshort'=>1, 'strftimedatetime'=>1,
+                            'strftimedaydate'=>1, 'strftimedaydatetime'=>1, 'strftimedayshort'=>1, 'strftimedaytime'=>1,
+                            'strftimemonthyear'=>1, 'strftimerecent'=>1, 'strftimerecentfull'=>1, 'strftimetime'=>1,
+                            'thischarset'=>1, 'thisdirection'=>1, 'thislanguage'=>1);
 
     $filetocheck = 'langconfig.php';
     $defaultlang = 'en_utf8';
-    if (in_array($identifier, $langconfigstrs)) {
-        $module = 'langconfig';  //This strings are under langconfig.php for 1.6 lang packs
+    if (array_key_exists($identifier, $langconfigstrs)) {
+            $module = 'langconfig';  //This strings are under langconfig.php for 1.6 lang packs
     }
 
     $lang = current_language();