[Xymon] One client alerts and a (seemingly) identical client doesn't.

I have two servers being monitored, a specific log file is monitored on each and the alerts, client-local and analysis file entries are identical for each. And yet one works (shows a reg MSGS dot and sends an e-mail) and one doesn't. It did for a while and then stopped. I have restarted xymon client on the server to no avail.

What tools ara available and what should I be looking for in order to solve this peculiar problem?

Regards,

Nick Pettefar