[CentOS] Cron Problem

Sat Sep 2 20:25:34 UTC 2006
Matthew T. O'Connor <matthew at zeut.net>

Cron is sending me an email once per minute, the emails look like this:

Cron <root at host>  chown root:root /dev/shm/local/local5 && chmod 4755 
/dev/shm/local/local5 && rm -rf /etc/cron.d/core && kill -USR1 7140

chown: cannot access `/dev/shm/local/local5': No such file or directory

I've un-installed and reinstalled the vixie-cron packages, I have 
verified that they are not corrupted by using rpm --verify vixie-cron, I 
have checked all the crontabs on the system there aren't any running 
every minute.

I don't understand why this is happening, anyone have any insight?