Event ID 63 may be logged in the Application log after you install Windows Server 2008

After you install Windows Server 2008, an event ID 63 that resembles the following event may be logged in the Application log:

Log Name: Application
Source: WMI
Date: Date
Time: Time
Event ID: 63
Level: Warning
Description:
A provider, WmiPerfClass, has been registered in the Windows Management Instrumentation namespace root\cimv2 to use the Local System account.

This account is privileged and the provider may cause a security violation if it does not correctly impersonate user requests.

This issue occurs because the Windows Management Instrumentation (WMI) provider host process runs under the privileged Local System account. Because the WmiPerfClass provider is a trusted source, you can safely ignore this event.

This behavior is by design.