maildrop "lockfile" error with maildir

["Russell L. Harris" <rlharris@oplink.net>]

Please forgive the cross-post, but I have gotten no response on this 
matter from the mutt list or from the maildrop list.  I have read all 
the relevant man pages and have been searching without success on Google 
for a solution (other than switching to procmail).

I am switching from Gnus to Mutt, and am using maildrop to provide the 
sorting which I previously was doing with Gnus.  I am running Debian 
Etch on an i386 (Celeron) desktop system.  The incoming mail chain is as 
follows:

  pop3.isp.com -> getmail4 -> maildrop -> [ maildir structures ] -> mutt

I created the maildir structures manually, using the command:

   $ mkdir -p ~/mail/<new-maildir-name>/{cur,new,tmp}

I am getting errors of the following variety:

   Delivery error (command maildrop 20225 error (75, /usr/bin/maildrop: 
Unable to create a dot-lock at computer/20225.0.cromwell.))

Here is my "~/.mailfilter" file:


   DEFAULT="$HOME/mail/nondescript/"

   ### flagged by SpamAssassin

   if ( /^Subject:.*SPAM/ )
   to spam

   if ( /^(To||Cc):.*debian-user/ )
   to computer/debian

   if ( /^(To||Cc):.*mutt-users/ )
   to computer/mutt

   if ( /^Subject:.*\[alsa-user\]/ )
   to computer/alsa

   if ( /^Subject:.*\[a-users\]/ )
   to computer/demudi

   to nondescript


RLH