# diff -Naur /etc/cron.daily/certwatch /etc/cron.daily/certwatch.new
--- /etc/cron.daily/certwatch	2011-03-22 20:18:47.000000000 +0100
+++ /etc/cron.daily/certwatch.new	2011-11-24 20:07:50.585087404 +0100
@@ -84,6 +84,7 @@
 done
 
 find $CERTDIR -type f -maxdepth 1 | while read certfile ; do
+  if [ "$certfile" != "/etc/ssl/certs/ca-certificates.crt" ]; then
   certfilebase="$(basename "$certfile")"
   inform=PEM
   echo "$certfile" | grep -q -i '\.net$'
@@ -124,5 +125,6 @@
       fi
     fi
   fi
+  fi
 done