I get the following when trying to perform an automatic upgrade:
Downloading update from http://wordpress.org/wordpress-2.8.2.zip
Unpacking the core update
Fatal error: Call to undefined function update_core() in /home/adam/web/public/blog/wp-admin/includes/update.php on line 475
I can't find any mention of anyone else having this problem; could it be something specific to OpenSolaris?