I have a daemon process that I have been testing by spawning from a command
line using
the '&' operator,..

eg...

mydaemon   &

This runs fine in the background for a day or so then terminates with a line
saying something
like "Alarm clock".

Is this the shell doing this? (I believe it is 'ksh'), if so, how do I stop
it?

Do I have to code the thing to detach itself from the controlling terminal?
(It's nice to get error messages on the system consol without locking it
out).

NetBSD 1.4.1

Regards

Roger