multiple comment notifications

Hi folks.

My blog is: The Boomtown Rap. I am using a Twenty Eleven child theme.

I started getting multiple notifications in my nominated email account every time any reader makes a comment on a post and I approve it (I get a single notification initially – the multiple occur only after I approve the comment, and is addressed to ‘me’). The same thing happens when I reply with a comment. I’m also getting multiple
[email protected] notifications, with ‘me, MAILER-DAEM(4)’ as the sender. Or the number in parentheses might be 1, 2 or 3.

I’ve contacted my hosting service support. They asked for the original headers on some of the examples of these multiple notifications, and could find no server problem. All they could suggest is that I check my backend Discussion settings, which I have done. I can see no settings that might account for or be implicated in this problem.

If anyone has come across this, or can offer some advice on how to remedy it, would be much appreciated.

Cheers
Ross