I have no idea why it puts my mails to the list into threads, rather than starting an new one: http://lists.xapian.org/pipermail/xapian-discuss/2009-October/007249.html http://lists.xapian.org/pipermail/xapian-discuss/2009-November/007277.html All I did is send the mail to the xapian-discuss at lists.xapian.org email ... apologies again.