I have a user that has the following error:
Fatal error: Call to undefined function mysql_get_server_info() in /home/someone/somesite.ca/wp-content/plugins/nextgen-gallery/admin/install.php on line 43
They are running the following plugins: Wordpress 3.5, Jetpack 2.1 and Oxygen 0.3.1-wpcom
http://wordpress.org/extend/plugins/postgresql-for-wordpress/