unsubscription not working

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Content-Type: text/plain; charset=ISO-8859-1
Content-Transfer-Encoding: 7bit

Trying to unsubscribe from the list, send the email and get this response:
'Acknowledgment: The address



tinmachin3@googlemail.com



was not on the php-general mailing list when I received your request and is
not a subscriber of this list.'


Where I'm sure that is the address I'm subscribed with.

--
Luke Slater
:O)

this text is protected by international copyright. it is illegal for
anybody apart from the recipient to keep a copy of this text.
dieser text wird von internationalem urheberrecht geschuetzt. allen
ausser dem/der empfaenger/-in ist untersagt, eine kopie dieses textes
zu behalten.

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