diff --git a/ChangeLog b/ChangeLog
index 35c86f5df..61d2c5258 100644
--- a/ChangeLog
+++ b/ChangeLog
@@ -95,6 +95,7 @@ $Id$
 - bug [replication] Do not offer information_schema in the list of databases
 - bug [js] Avoid loading twice a js file
 - bug #3024344 [setup] Setup forces numeric MemoryLimit
+- bug #3025975 [auth] Odd LoginCookieValidity default value
 
 3.3.4.0 (2010-06-28)
 - bug #2996161 [import] properly escape import value
diff --git a/libraries/config.default.php b/libraries/config.default.php
index be034c8cb..7b24d8700 100644
--- a/libraries/config.default.php
+++ b/libraries/config.default.php
@@ -587,11 +587,11 @@ $cfg['Confirm'] = true;
 $cfg['LoginCookieRecall'] = true;
 
 /**
- * validity of cookie login (in seconds)
+ * validity of cookie login (in seconds; 1800 seconds is 30 minutes)
  *
  * @global integer $cfg['LoginCookieValidity']
  */
-$cfg['LoginCookieValidity'] = 1440;
+$cfg['LoginCookieValidity'] = 1800;
 
 /**
  * how long login cookie should be stored (in seconds)