Discussion list - getting multiple duplicate email

I created a discussion list and every time some one posts to it - I get between 1 and 3 copies of the same, identical, email! What is going on?
I checked the headers of the duplicates - figguring that one might be going to my admin address & the other was going to the subscribed address - but both of them were IDENTICAL. Both (or even all three) were going to the subscribed address.
On one else on the list is having these issuse - just me :(

Is is because I'm an admin?
Is it because I created the list?

Yes, "Filter out duplicate messages to list members " is checked - but that does nothing :(

Does anyone know whats going on?

Can you send headers for one complete set of duplicate messages to support, with Attn: to Dallas or myself?

Headers from Email #1 That I sent

These *are* the exact same email as far as I can tell (i.e., they were delivered to the same address, the SMTP ID is the same, the message-ID and received lines are the same). I pasted each header section to

My only suggestion would be that maybe you're having a client side problem that's causing this. Are you using POP3 or IMAP? Are you using webmail as well as a "regular" standalone mail client?

Note - you might want to edit your post and remove / munge email addresses and headers so you don't get spammed to those email addresses. That's why I suggested sending 'em to support instead of posting them here.

D'oh!

just obfuscated it.

And I just sent in the tech support request with links to where the sample emails can be located.
ID #831905

Figgured out the problem.
It was my Outlook2003 email client - it was configured with multiple pop3 email accounts that were actually two different mailboxes.
I just reconfigured my "extra" email accounts not to recieve email.