I have installed centminmod on 2 vps. I noticed every night 2 emails from both servers, one at 00:11 UTC and one at 23:11 UTC with results of autoprotect.sh. When I checked cron, I found: Code (Text): [root@vps /]# crontab -l 11 */23 * * * /usr/local/src/centminmod/tools/autoprotect.sh 2>/dev/null This means, (every day at 00:11UTC -and every 23hours after that-) run this script. Why do you use */23 for the hours and not at a fixed time ? Is this a typo or intended ?