Security Audit failure when users are connected to phpbb forum

I'm not sure whats causing this, but it seems to coincide when users are accessing phpbb forums on domains hosted on the server

here is a copy of the error:
EVENT # 8576
EVENT LOG Security
EVENT TYPE Audit Failure
SOURCE Security
CATEGORY Object Access
EVENT ID 560
USERNAME LOCALHOST\IUSR_twilightofchaos
COMPUTERNAME   LOCALHOST
TIME 3/19/2006 5:26:48 PM
MESSAGE Object Open:
Object Server: SC Manager
Object Type: SC_MANAGER OBJECT
Object Name: ServicesActive
Handle ID: -
Operation ID: {0,23856039}
Process ID: 848
Image File Name: C:\WINDOWS\system32\services.exe
Primary User Name: LOCALHOST$
Primary Domain: WORKGROUP
Primary Logon ID: (0x0,0x3E7)
Client User Name: IUSR_twilightofchaos
Client Domain: LOCALHOST
Client Logon ID: (0x0,0x168A613)
Accesses: READ_CONTROL
Connect to service controller
Enumerate services
Query service database lock state

Privileges: -
Restricted Sid Count: 0
Access Mask: 0x20015
 
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i basically get spammed with this (40+ times in less than 5 minutes)
and i've changed the permissions on the directory and nothing changes, the director is currenty set to win2003server equivilant of chmod 777 - write/edit/read/etc
the db that is in use is MySQL if that helps.
if anyone has any suggestions on where i can start looking to resolve this i would appreciate it.
Thanks.