odd cron returns

[hawk@hawkins.cba.uni.edu]

I have the crontab file "mycron" with the contents

ch1quiz@hawkins:~$ crontab -l
1,11,21,31,41,51 * * * *  /usr/local/bin/updatehw >> $HOME/tmp.quizlog


which results in the crontab entry of

# DO NOT EDIT THIS FILE - edit the master and reinstall.
# (/tmp/crontab.XXXX4hHwFM installed on Tue Feb  1 11:36:48 2000)
# (Cron version -- $Id: crontab.c,v 2.13 1994/01/17 03:20:37 vixie Exp $)
1,11,21,31,41,51 * * * *  /usr/local/bin/updatehw >> $HOME/tmp.quizlog
# DO NOT EDIT THIS FILE - edit the master and reinstall.
# (/tmp/crontab.XXXX4hHwFM installed on Tue Feb  1 11:36:48 2000)
# (Cron version -- $Id: crontab.c,v 2.13 1994/01/17 03:20:37 vixie Exp $)
1,11,21,31,41,51 * * * *  /usr/local/bin/updatehw >> $HOME/tmp.quizlog

However, the mail gets inundated with reports of

Delivery-Date: Fri Feb  4 10:30:01 2000
Return-Path: <ch1quiz>
X-Cron-Env: <SHELL=/bin/sh>
X-Cron-Env: <PATH=/usr/local/sbin:/usr/local/bin:/sbin:/bin:/usr/sbin:/usr/bin>
X-Cron-Env: <HOME=/home/ch1quiz>
X-Cron-Env: <LOGNAME=ch1quiz>

/bin/sh: -c: line 1: syntax error near unexpected token `&'



That is, it's not executingthe command in the crontab, but a differetn one 
--note thatthe >> becomes a 2>>&  

How do I fix this?   What I need here is for cron to *not* send any
mail at all--this account exists to sort and process mail, and 
extra mail makes the job harder.

Rick