I unsubscribed a while ago and then resubscribed. It took about four unsubscribe attempts before it actually worked.

From: "Fatih P." <fatihpiristine@gmail.com>
Reply-To: <user@cassandra.apache.org>
Date: Mon, 10 Jun 2013 17:46:30 +0300
To: <user@cassandra.apache.org>
Subject: Re: Unsubscribe?

i tried the same and receiving mails.

On Mon, Jun 10, 2013 at 5:34 PM, Luke Hospadaruk <Luke.Hospadaruk@ithaka.org> wrote:
I hate to be a clod, but I'd really like to unsubscribe from this list.  I've tried every permutation I can think of to do it "the right way", and all of the styles in the help message.  If there's a moderator reading this could you please take me off the list?