I am seeing this warning quite frequently, although, the worker id seems to be different each time.
I'm not seeing anything in my CRM System Jobs at the times these warnings are occuring.
Any idea what is going on?
The Sandbox Host service has terminated a Sandbox Worker process.
Source: Microsoft.Crm.Sandbox.HostService.exe (4900)
When a Worker process shuts down due to lifetime timeout, this event log warning is logged. This warning is normal, you don't need to worry about it.