after install wordpress 2.5 on an new website i have become a fatal error when i click to "widgets". the announcement is:
Fatal error: Cannot redeclare register_sidebars() (previously declared in /www/htdocs/w009cf4e/wp-includes/widgets.php:13) in /www/htdocs/w009cf4e/wp-content/plugins/widgets.php on line 42
i`m not a programmer. what is the problem?