On Wed, 2 Aug 89 14:24:47 GMT Eric Thomas said: >What does "down" mean for your accounting server, Hans-Ulrich? If it >means "logged off", this would explain the difference. For IAMUP, "down" >means "unable to execute commands", which includes logged off but also >stuck in a disabled loop and similar things. ... eric, you are right. it means logged off. BUT : i have had months when LISTSERV was stopped 3 or 4 times (for about 3 minutes) and i'm absolutely sure that it shows several hours of downtime. this brings me to the idea of sample-intervals. what is the monitor counting for a 3 minute down-time in the worst case ? -ulrich-