On Fri, Mar 18 2011, Bastien wrote:

> I have the same problem, and the funky part is that it happens only with
> Julien's email address -- as Julien is also hacking Gnus, I suspect some
> backdoor he introduced in gnus-summary-wide-reply ;)

Not at all, that's the direct effect of a header called
Mail-Followup-To, which I put in my e-mails and which indicates that
there's no need to Cc me since I'm subscribed to the list. This avoids
receiving the emails twice when people answer.

Kids, look at the `message-subscribed-*' variables to configure this at
home.

:)

-- 
Julien Danjou
❱ http://julien.danjou.info