In the end I removed php5-cli, which seemed to fix things, so I imagine the bug was a result of conflicting packages in some way.
-- You received this bug notification because you are a member of Ubuntu Server Team, which is subscribed to php5 in Ubuntu. https://bugs.launchpad.net/bugs/1093428 Title: Cron job reports unable to load pdo_mysql.so To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/php5/+bug/1093428/+subscriptions -- Ubuntu-server-bugs mailing list Ubuntu-server-bugs@lists.ubuntu.com Modify settings or unsubscribe at: https://lists.ubuntu.com/mailman/listinfo/ubuntu-server-bugs