[horde] doubles in the Trash

[steven.TSE]

Hi!  I got a problem on Trash folder, every time i delete a message, it will
have 2 copies in the Trash folder.  Please notice i have modified the
imp/config/pref.conf to:

// should we move messages to a trash folder instead of just marking
// them as deleted?
// a value of 0 = no, 1 = yes
$_prefs['use_trash'] = array(
    'value' => 1,
    'locked' => false,
    'shared' => false,
    'type' => 'checkbox',
    'desc' => _("When deleting messages, move them to your Trash folder
instead of marking them as deleted?")
);

its running on Horde 2.2.1 + Imp 3.2.1

Is it a bug or my configuration problem...?  Thankyou very much!!

Steven