I thought you said that "crontab -l" showed nothing?

What can you see in /var/cron/tabs? Is the file with your username non-existant or zero length?

Are you refering to a small wrapper script you use to call the perl program?

I suggest you comment out the call to the perl program or even rename the wrapper. Once you rename, check your mail on the box to see if you start getting mail about not being able to run your job.

If you do, then send that mail plus a listing from "crontab -l" to your administrator.