under heavy load the WMI network card sensor fail with error "PC: Could not log in using the specified credentials. Please make sure they are not only valid for the target system, but for the probe system aswell. (Performance Counter error 0xB0000004)"
--> error, ok, ok, error, ok, error, ok, ok ..... and so on.
All other WMI sensor (CPU, memory) with samer 60 seconds interval work fine.
It's a matter of two Windows 2008 server (not R2).
What is better solution a) upgrade to R2 due to better WMI performance b) change (all) sensor to SNMP ?