I’m getting the same sort of error:
Fatal error: Cannot redeclare pclziputilpathreduction() (previously declared in /home/edutecha/public_html/wp-content/plugins/wordpress-automatic-upgrade/lib/pclzip.lib.php:5421) in /home/edutecha/public_html/wp-admin/includes/class-pclzip.php on line 5489
The rest of 2.5 is running fine. Is this a bug or is it a problem in my wordpress?