Got the same problem
Is there already a bug report?

On Mon, Dec 22, 2008 at 12:45 PM, pyther <pyther@pyther.net> wrote:

Hello.

Every time there is an announcement on the the main I'll get an email (as I
am on the arch-announce list). However, about 5-8 hours I'll get another
copy of the email. For example I got the [arch-announce] Pacman update and
mirrorlist email Sunday at 23:00 and then today at 05:02. This has been
happening for a few months now. I've checked the mail headers and each
email is being delivered to the same address. Does anyone else have this
problem or am I just lucky?

~pyther