[CentOS] Something is writing a log

Sun Mar 25 15:35:56 UTC 2007
William L. Maltby <CentOS4Bill at triad.rr.com>

On Sun, 2007-03-25 at 07:16 -0400, Robert Moskowitz wrote:
> I can just be sittting, doing nothing, and I hear the sound of my 
> hardrive head moving.  Just every so often.  Like some process is 
> writing a log.
> I have looked in /var/log and do see occational updates to acpi and 
> messages, but that does not account for all the clicks.
> Is there somewhere else to look for logs?  I would really like to know 
> what process has something to remember.....
> <snip sig stuff>

Are you sure it's log activity from the OS? Got "smart" drives? They
doing anything? Maybe cache flushes (default 5 seconds, IIRC)? Checked
your crontabs?