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. About twice a month we have
to stop and restart the CEARN LISTSERV manually after it goes into such a
loop (fixed in 1.6a). This accounts for the 9h we got this month. I don't
know about other sites, though.
 
  Eric