Turns out that the unit was rebooted. The CRON that had been running was the original turn-up of the CRON service from the cli. The one that quit was started by the startup script /usr2/rc.user. For some reason this CRON process just smiles and waves, crontab -l shows the job in the queue but will not run. This behavior continued across an additional reboot. Killed the existing process and restarted cron from the cli and now it all works again... until the next reboot... Any ideas???