Looks like my .htaccess file was messed up. It had:
SuPHP_ConfigPath /home/ourcount
This was causing the php.ini on /home/ourcount to be loaded instead our server’s default php.ini.
Site5 support helped me by commenting out the SuPHP_ConfigPath line and renamed php.ini as php.ini_old.
Everything is working great now!
Thanks for the forum support. It was very helpful to know that PDO *should* be available – that gave me reason to think that something I did messed it up.
Answer #1
Weird!
My own phpinfo() says that the PDO driver for MySQL (pdo_mysql) is available and enabled on both my accounts (hostPro+turbo and Premier).