every now and then we get an error on one of the Service and/or Performance monitors stating it cannot monitor the server. error message ends with [err=0x6, CurrUser=pamonitor, Imp={none}]
I think that's where the problem is because this server should be monitored with different credentials. the monitored server is not part of the domain, so alternative credentials are needed.
After a couple of minutes the error disappears, and all monitors are green again.
Hope to hear, Marc Punte Sysadmin Ster Netherlands.