Hi, I am totally confused, whenever i add counters to isa perfomance monitor the event viewer gets full and application log gives the following error. The Open Procedure for service "Fwsrv" in DLL "E:\Program Files\Microsoft ISA Server\WSPPERF.DLL" failed. Performance data for this service will not be available. Status code returned is data DWORD 0. what does that mean and how to get rid of this. Please advice