can't sort by arrival

[Martin Marques]

I'm having a real hard time making RC sort my messages by arrival instead of 
date. I tried putting:

$rcmail_config['message_sort_col'] = 'internaldate';

and even

$rcmail_config['message_sort_col'] = 'arrival';

I even tried to put it in upper case, but still with no luck. Any ideas?

P.D.: I'm on the latest CVS.

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Lic. Martín Marqués         |   SELECT 'mmarques' || 
Centro de Telemática        |       '@' || 'unl.edu.ar';
Universidad Nacional        |   DBA, Programador, 
    del Litoral             |   Administrador
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