in case it is a clue, I get an error on page on the backend when I’m on an Edit Post page:
Error: '$j.datepicker.regional' is null or not an object
Code: 0
URL: http://orlandograce.org/wordpress/wp-admin/media.php?action=edit&attachment_id=461
I’m having the same issue using WP 2.8.4, and it seems to have started when I switched web hosting to justhost.com, although I don’t see what the webhost would have to do with why I’m not getting email notifications for either comments held in moderation or comments that are published.