From a newsgroup post: "To work around this behavior, force the File Replication service to re-create the registry keys that point to the system monitor counters
for the File Replication service:
1. Type the "net stop NTFRS" (without the quotation marks) command at a command prompt to stop the File Replication service.
2. Start Registry Editor, and then delete the following registry keys:
a. Delete the FileReplicaConn folder and all the subfolders, which are located under the HKLM\System\CurrentControlSet\Services key.
b. Delete the FileReplicaSet folder and all the subfolders, which are located under the HKLM\System\CurrentControlSet\Services key.
3. Restart the File Replication service to place the two keys back in the registry.
You may need to refresh Registry Editor to see the newly created registry keys. In addition, you can disable performance counters for a specific service with the Exctrlst.exe utility from the Windows 2000 Resource Kit. This utility disables the specific counter by adding a registry key similar to the example below. You can add these registry entries under the specific counter entry manually if Exctrlst.exe is not available or desirable."