procmail, day 2

[=?x-user-defined?Q?toylet=2Elinux=5B=A4p=AA=B1=B7N=5D?=]

I am adding some more codes from linux-sxs's promail receipt.

1. what should I add in my /etc/procmailrc to resolve those lockfile
errors
2. ln -s /bin/sed /usr/bin/sed not working?

procmail: Extraneous locallockfile ignored
procmail: Skipped "duplicate"
procmail: Skipped ", through it out. if it's not, add the message id to
the cache file"
procmail: Lock failure on "/var/log/msgid.lock"
formail: Couldn't open "/var/log/msgid.cache"
/bin/sh: /usr/bin/sed: No such file or directory
/bin/sh: /usr/bin/sed: No such file or directory
procmail: Skipped "$DEFAULT"
>From alinares at fivetech.com Fri Apr  5 14:30:14 2002
 Subject:
  Folder: /var/spool/mail/toylet  

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