Command time limit exceeded:, "/usr/bin/procmail"

Hi,

so I am receiving notifications that sometimes incoming mail is bouncing 
due to 'Command time limit exceeded:    "/usr/bin/procmail"'

What is the best way to figure out what is causing this.  I am running 
spamd and also invoking spamc from the .procmailrc .

what is the best method to controlling spam?  using spamd or having a 
local invocation of spamc in each users' homedir .procmailrc ?

here is my procmailrc -  is this file fairly complete or are there other 
options I should be considering?



--- snip ---

PATH=/usr/local/bin:/bin:/usr/bin:$PATH
HOME=/home/<user>
MAILIN=$HOME/mail
DEFAULT=/var/mail/<user>
#MAILDIR=$HOME/Mail
#LOGFILE=$MAILDIR/from
LOCKFILE=/var/mail/<user>.lock
NULL=/dev/null

:0fw: spamassassin.lock
| /usr/bin/spamc

:0
* ^X-Spam-Status: Yes
$MAILIN/Spam

--- snip ---