Unnecessary Success Audits appear in Security Log

From: Andrew (apomphre@sewl.com.au)
Date: 04/14/03 

From: apomphre@sewl.com.au (Andrew)
Date: 13 Apr 2003 21:57:58 -0700

How do I stop this successfull event from flooding my eventlog:
Its happening every second!
_________________________________________________
Source Security category Object Access
Type Success
User NT Authority\SYSTEM
Computer: MYSERVER
Object Open:
         Object Server: Security
         Object Type: Key
         Object Name: \REGISTRY\MACHINE\SYSTEM\ControlSet001\Services\cdrom
         New Handle ID: 380
         Operation ID: {0,31513334}
         Process ID: 2028
         Primary User Name: MYSERVER$
         Primary Domain: MYDOMAIN
         Primary Logon ID: (0x0,0x3E7)
         Client User Name: -
         Client Domain: -
         Client Logon ID: -
         Accesses DELETE
                        READ_CONTROL
                        WRITE_DAC
                        WRITE_OWNER
                        Query key value
                        Set key value
                        Create sub-key
                        Enumerate sub-keys
                        Notify about changes to keys
                        Create Link
                        
         Privileges -
_________________________________________________________________

I noticed the CD Was shared, so I unshared it - still it logs this
message every second.
TIA,
Andrew