Sh Stats Not Appearing in Log.nsf Server 6.5.6 FP1

When submitting Sh Stat it does not write to Log.nsf i.e. the following appears:-

sh stat

827 statistics found

The ini has the following configuration:-

Log=log.nsf, 1 0, 7, 40000

Console_LogLevel=2

I have compared my configuration with all the other servers in my domain which work fine and I cannot see any difference.

The Log.nsf has been recreated incase it was compromised in anyway and the ACL checked/compared.

Your professional advise would be much appreciated as I would appear to have exhausted my knowledge.