Ok - I've just posted a reply to the above subject and it bounced straight
back with this reply (my message was posted still though)

Your message  is being returned to  you unprocessed because it  appears to
have
already been distributed to the PICLIST list. That is, a message with
identical
text (but  possibly with different  mail headers) has  been posted to  the
list
recently, either by you or by someone else. If you have a good reason to
resend
this message  to the  list (for instance  because you have  been notified
of a
hardware failure with  loss of data), please  alter the text of  the message
in
some way and resend  it to the list. Note that altering  the "Subject:" line
or
adding blank lines at  the top or bottom of the message  is not sufficient;
you
should  instead add  a  sentence or  two  at  the top  explaining  why you
are
resending the  message, so that the  other subscribers understand why  they
are
getting two copies of the same message.

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