AEM 6.1 unexpectedly shutting down
Has anyone experienced AEM 6.1 unexpectedly shutting down? It's not a process crash - the logs indicate a full shutdown of felix and everything stopping nicely - no errors. We can't see what is triggering this - it's at odd times of day - it happened yesterday and today on the same publish instance - has anyone experienced this? Any idea what could cause unexpected AEM 6.1 shutdown?
Thanks,
Beth