Cron script fails after 70 iterations

[CuriousGuy]

Description of system:
I have the following script to update around 500 AWStats databases automatically called updateall.sh:

#!/bin/bash
cd /usr/share/awstats/
for file in *.conf
do
  F=${file:8}
  CONFIG=${F/.conf/}
  CMD=`/usr/share/awstats/bin/awstats.pl -update -config=$CONFIG | grep qualified`
  echo $CONFIG : $CMD
done

I have set up a cron job to execute the script once an hour as root like so:

0 * * * * /usr/share/awstats/bin/updateall.sh

Problem:
Running this script by hand as root works everytime without fail. When it is executed as a cronjob, it will only process the first 70 configuration files before exiting.

/var/log/cron only shows:

crond[29721]: (root) CMD (/usr/share/awstats/bin/updateall.sh

UPDATE: Something very odd! I tried setting "ulimit -t 1800" in the script to no avail, but when I tested the cronjob by setting it to run in the next minute, I discovered that there are two updateall.sh processes running, but only one crond process running. I had *JUST* set this script to run that next minute so there is no other user's cronjob that could be interfering. Very, very odd indeed!

Does cron have a timeout or some other configuration setting I should be looking at? Thank you for any assistance!