Ok I ran the WMI tool suggested earlier by Rob, and this is what I got. Apologies for the block of text.
31915 00:47:01 (0) ** WMIDiag v2.0 started on Saturday, March 12, 2011 at 00:42.
31916 00:47:01 (0) **
31917 00:47:01 (0) ** Copyright © Microsoft Corporation. All rights reserved - January 2007.
31918 00:47:01 (0) **
31919 00:47:01 (0) ** This script is not supported under any Microsoft standard support program or service.
31920 00:47:01 (0) ** The script is provided AS IS without warranty of any kind. Microsoft further disclaims all
31921 00:47:01 (0) ** implied warranties including, without limitation, any implied warranties of merchantability
31922 00:47:01 (0) ** or of fitness for a particular purpose. The entire risk arising out of the use or performance
31923 00:47:01 (0) ** of the scripts and documentation remains with you. In no event shall Microsoft, its authors,
31924 00:47:01 (0) ** or anyone else involved in the creation, production, or delivery of the script be liable for
31925 00:47:01 (0) ** any damages whatsoever (including, without limitation, damages for loss of business profits,
31926 00:47:01 (0) ** business interruption, loss of business information, or other pecuniary loss) arising out of
31927 00:47:01 (0) ** the use of or inability to use the script or documentation, even if Microsoft has been advised
31928 00:47:01 (0) ** of the possibility of such damages.
31929 00:47:01 (0) **
31930 00:47:01 (0) **
31931 00:47:01 (0) ** ----------------------------------------------------------------------------------------------------------------------------------
31932 00:47:01 (0) ** ----------------------------------------------------- WMI REPORT: BEGIN ----------------------------------------------------------
31933 00:47:01 (0) ** ----------------------------------------------------------------------------------------------------------------------------------
31934 00:47:01 (0) **
31935 00:47:01 (0) ** ----------------------------------------------------------------------------------------------------------------------------------
31936 00:47:01 (0) ** Windows XP - No service pack - 32-bit (2600) - User 'HOME\\OWNER' on computer 'HOME'.
31937 00:47:01 (0) ** ----------------------------------------------------------------------------------------------------------------------------------
31938 00:47:01 (0) ** Environment: ........................................................................................................ OK..
31939 00:47:01 (0) ** System drive: ....................................................................................................... C: (Disk #0 Partition #0).
31940 00:47:01 (0) ** Drive type: ......................................................................................................... IDE (ST3320620AS).
31941 00:47:01 (0) ** There are no missing WMI system files: .............................................................................. OK.
31942 00:47:01 (0) ** There are no missing WMI repository files: .......................................................................... OK.
31943 00:47:01 (0) ** WMI repository state: ............................................................................................... N/A.
31944 00:47:01 (0) ** BEFORE running WMIDiag:
31945 00:47:01 (0) ** The WMI repository has a size of: ................................................................................... 21 MB.
31946 00:47:01 (0) ** - Disk free space on 'C:': .......................................................................................... 15249 MB.
31947 00:47:01 (0) ** - INDEX.BTR, 1507328 bytes, 3/11/2011 6:05:28 PM
31948 00:47:01 (0) ** - INDEX.MAP, 768 bytes, 3/11/2011 6:05:28 PM
31949 00:47:01 (0) ** - OBJECTS.DATA, 20209664 bytes, 3/11/2011 6:05:28 PM
31950 00:47:01 (0) ** - OBJECTS.MAP, 9908 bytes, 3/11/2011 6:05:28 PM
31951 00:47:01 (0) ** AFTER running WMIDiag:
31952 00:47:01 (0) ** The WMI repository has a size of: ................................................................................... 21 MB.
31953 00:47:01 (0) ** - Disk free space on 'C:': .......................................................................................... 15243 MB.
31954 00:47:01 (0) ** - INDEX.BTR, 1507328 bytes, 3/11/2011 6:05:28 PM
31955 00:47:01 (0) ** - INDEX.MAP, 768 bytes, 3/11/2011 6:05:28 PM
31956 00:47:01 (0) ** - OBJECTS.DATA, 20209664 bytes, 3/11/2011 6:05:28 PM
31957 00:47:01 (0) ** - OBJECTS.MAP, 9908 bytes, 3/11/2011 6:05:28 PM
31958 00:47:01 (0) ** ----------------------------------------------------------------------------------------------------------------------------------
31959 00:47:01 (0) ** Windows Firewall: ................................................................................................... NOT INSTALLED.
31960 00:47:01 (0) ** ----------------------------------------------------------------------------------------------------------------------------------
31961 00:47:01 (0) ** DCOM Status: ........................................................................................................ OK.
31962 00:47:01 (0) ** WMI registry setup: ................................................................................................. OK.
31963 00:47:01 (0) ** WMI Service has no dependents: ...................................................................................... OK.
31964 00:47:01 (0) ** RPCSS service: ...................................................................................................... OK (Already started).
31965 00:47:01 (0) ** WINMGMT service: .................................................................................................... OK (Already started).
31966 00:47:01 (0) ** ----------------------------------------------------------------------------------------------------------------------------------
31967 00:47:01 (0) ** WMI service DCOM setup: ............................................................................................. OK.
31968 00:47:01 (2) !! WARNING: WMI DCOM components registration is missing for the following EXE/DLLs: .................................... 6 WARNING(S)!
31969 00:47:01 (0) ** - C:\\WINDOWS\\SYSTEM32\\WBEM\\FASTPROX.DLL (\\CLSID\\{7A0227F6-7108-11D1-AD90-00C04FD8FDFF}\\InProcServer32)
31970 00:47:01 (0) ** - C:\\WINDOWS\\SYSTEM32\\WBEM\\FASTPROX.DLL (\\CLSID\\{D71EE747-F455-4804-9DF6-2ED81025F2C1}\\InProcServer32)
31971 00:47:01 (0) ** - C:\\WINDOWS\\SYSTEM32\\WBEM\\FASTPROX.DLL (\\CLSID\\{ED51D12E-511F-4999-8DCD-C2BAC91BE86E}\\InProcServer32)
31972 00:47:01 (0) ** - C:\\WINDOWS\\SYSTEM32\\WBEM\\WBEMPROX.DLL (\\CLSID\\{4C6055D8-84B9-4111-A7D3-6623894EEDB3}\\InProcServer32)
31973 00:47:01 (0) ** - C:\\WINDOWS\\SYSTEM32\\WBEM\\WBEMPROX.DLL (\\CLSID\\{A1044801-8F7E-11D1-9E7C-00C04FC324A8}\\InProcServer32)
31974 00:47:01 (0) ** - C:\\WINDOWS\\SYSTEM32\\WBEM\\WBEMPROX.DLL (\\CLSID\\{F7CE2E13-8C90-11D1-9E7B-00C04FC324A8}\\InProcServer32)
31975 00:47:01 (0) ** => WMI System components are not properly registered as COM objects, which could make WMI to
31976 00:47:01 (0) ** fail depending on the operation requested.
31977 00:47:01 (0) ** => For a .DLL, you can correct the DCOM configuration by executing the 'REGSVR32.EXE <Filename.DLL>' command.
31978 00:47:01 (0) **
31979 00:47:01 (0) ** WMI ProgID registrations: ........................................................................................... OK.
31980 00:47:01 (0) ** WMI provider DCOM registrations: .................................................................................... OK.
31981 00:47:01 (0) ** WMI provider CIM registrations: ..................................................................................... OK.
31982 00:47:01 (0) ** WMI provider CLSIDs: ................................................................................................ OK.
31983 00:47:01 (0) ** WMI providers EXE/DLL availability: ................................................................................. OK.
31984 00:47:01 (0) ** ----------------------------------------------------------------------------------------------------------------------------------
31985 00:47:01 (0) ** DCOM security for 'Microsoft WBEM UnSecured Apartment' (Launch & Activation Permissions): ........................... MODIFIED.
31986 00:47:01 (1) !! ERROR: Default trustee 'BUILTIN\\ADMINISTRATORS' has been REMOVED!
31987 00:47:01 (0) ** - REMOVED ACE:
31988 00:47:01 (0) ** ACEType: &h0
31989 00:47:01 (0) ** ACCESS_ALLOWED_ACE_TYPE
31990 00:47:01 (0) ** ACEFlags: &h0
31991 00:47:01 (0) ** ACEMask: &h1
31992 00:47:01 (0) ** DCOM_RIGHT_EXECUTE
31993 00:47:01 (0) **
31994 00:47:01 (0) ** => The REMOVED ACE was part of the DEFAULT setup for the trustee.
31995 00:47:01 (0) ** Removing default security will cause some operations to fail!
31996 00:47:01 (0) ** It is possible to fix this issue by editing the security descriptor and adding the ACE.
31997 00:47:01 (0) ** For DCOM objects, this can be done with 'DCOMCNFG.EXE'.
31998 00:47:01 (0) **
31999 00:47:01 (0) ** DCOM security for 'Microsoft WBEM UnSecured Apartment' (Launch & Activation Permissions): ........................... MODIFIED.
32000 00:47:01 (1) !! ERROR: Default trustee 'NT AUTHORITY\\INTERACTIVE' has been REMOVED!
32001 00:47:01 (0) ** - REMOVED ACE:
32002 00:47:01 (0) ** ACEType: &h0
32003 00:47:01 (0) ** ACCESS_ALLOWED_ACE_TYPE
32004 00:47:01 (0) ** ACEFlags: &h0
32005 00:47:01 (0) ** ACEMask: &h1
32006 00:47:01 (0) ** DCOM_RIGHT_EXECUTE
32007 00:47:01 (0) **
32008 00:47:01 (0) ** => The REMOVED ACE was part of the DEFAULT setup for the trustee.
32009 00:47:01 (0) ** Removing default security will cause some operations to fail!
32010 00:47:01 (0) ** It is possible to fix this issue by editing the security descriptor and adding the ACE.
32011 00:47:01 (0) ** For DCOM objects, this can be done with 'DCOMCNFG.EXE'.
32012 00:47:01 (0) **
32013 00:47:01 (0) ** DCOM security for 'Microsoft WBEM UnSecured Apartment' (Launch & Activation Permissions): ........................... MODIFIED.
32014 00:47:01 (1) !! ERROR: Default trustee 'NT AUTHORITY\\SYSTEM' has been REMOVED!
32015 00:47:01 (0) ** - REMOVED ACE:
32016 00:47:01 (0) ** ACEType: &h0
32017 00:47:01 (0) ** ACCESS_ALLOWED_ACE_TYPE
32018 00:47:01 (0) ** ACEFlags: &h0
32019 00:47:01 (0) ** ACEMask: &h1
32020 00:47:01 (0) ** DCOM_RIGHT_EXECUTE
32021 00:47:01 (0) **
32022 00:47:01 (0) ** => The REMOVED ACE was part of the DEFAULT setup for the trustee.
32023 00:47:01 (0) ** Removing default security will cause some operations to fail!
32024 00:47:01 (0) ** It is possible to fix this issue by editing the security descriptor and adding the ACE.
32025 00:47:01 (0) ** For DCOM objects, this can be done with 'DCOMCNFG.EXE'.
32026 00:47:01 (0) **
32027 00:47:01 (0) ** WMI namespace security for 'ROOT/SERVICEMODEL': ..................................................................... MODIFIED.
32028 00:47:01 (1) !! ERROR: Actual trustee 'NT AUTHORITY\\NETWORK SERVICE' DOES NOT match corresponding expected trustee rights (Actual->Default)
32029 00:47:01 (0) ** - ACTUAL ACE:
32030 00:47:01 (0) ** ACEType: &h0
32031 00:47:01 (0) ** ACCESS_ALLOWED_ACE_TYPE
32032 00:47:01 (0) ** ACEFlags: &h2
32033 00:47:01 (0) ** CONTAINER_INHERIT_ACE
32034 00:47:01 (0) ** ACEMask: &h1
32035 00:47:01 (0) ** WBEM_ENABLE
32036 00:47:01 (0) ** - EXPECTED ACE:
32037 00:47:01 (0) ** ACEType: &h0
32038 00:47:01 (0) ** ACCESS_ALLOWED_ACE_TYPE
32039 00:47:01 (0) ** ACEFlags: &h12
32040 00:47:01 (0) ** CONTAINER_INHERIT_ACE
32041 00:47:01 (0) ** INHERITED_ACE
32042 00:47:01 (0) ** ACEMask: &h13
32043 00:47:01 (0) ** WBEM_ENABLE
32044 00:47:01 (0) ** WBEM_METHOD_EXECUTE
32045 00:47:01 (0) ** WBEM_WRITE_PROVIDER
32046 00:47:01 (0) **
32047 00:47:01 (0) ** => The actual ACE has the right(s) '&h12 WBEM_METHOD_EXECUTE WBEM_WRITE_PROVIDER' removed!
32048 00:47:01 (0) ** This will cause some operations to fail!
32049 00:47:01 (0) ** It is possible to fix this issue by editing the security descriptor and adding the removed right.
32050 00:47:01 (0) ** For WMI namespaces, this can be done with 'WMIMGMT.MSC'.
32051 00:47:01 (0) ** Note: WMIDiag has no specific knowledge of this WMI namespace.
32052 00:47:01 (0) ** The security diagnostic is based on the WMI namespace expected defaults.
32053 00:47:01 (0) ** A specific WMI application can always require a security setup different
32054 00:47:01 (0) ** than the WMI security defaults.
32055 00:47:01 (0) **
32056 00:47:01 (0) ** WMI namespace security for 'ROOT/SERVICEMODEL': ..................................................................... MODIFIED.
32057 00:47:01 (1) !! ERROR: Actual trustee 'NT AUTHORITY\\LOCAL SERVICE' DOES NOT match corresponding expected trustee rights (Actual->Default)
32058 00:47:01 (0) ** - ACTUAL ACE:
32059 00:47:01 (0) ** ACEType: &h0
32060 00:47:01 (0) ** ACCESS_ALLOWED_ACE_TYPE
32061 00:47:01 (0) ** ACEFlags: &h2
32062 00:47:01 (0) ** CONTAINER_INHERIT_ACE
32063 00:47:01 (0) ** ACEMask: &h1
32064 00:47:01 (0) ** WBEM_ENABLE
32065 00:47:01 (0) ** - EXPECTED ACE:
32066 00:47:01 (0) ** ACEType: &h0
32067 00:47:01 (0) ** ACCESS_ALLOWED_ACE_TYPE
32068 00:47:01 (0) ** ACEFlags: &h12
32069 00:47:01 (0) ** CONTAINER_INHERIT_ACE
32070 00:47:01 (0) ** INHERITED_ACE
32071 00:47:01 (0) ** ACEMask: &h13
32072 00:47:01 (0) ** WBEM_ENABLE
32073 00:47:01 (0) ** WBEM_METHOD_EXECUTE
32074 00:47:01 (0) ** WBEM_WRITE_PROVIDER
32075 00:47:01 (0) **
32076 00:47:01 (0) ** => The actual ACE has the right(s) '&h12 WBEM_METHOD_EXECUTE WBEM_WRITE_PROVIDER' removed!
32077 00:47:01 (0) ** This will cause some operations to fail!
32078 00:47:01 (0) ** It is possible to fix this issue by editing the security descriptor and adding the removed right.
32079 00:47:01 (0) ** For WMI namespaces, this can be done with 'WMIMGMT.MSC'.
32080 00:47:01 (0) ** Note: WMIDiag has no specific knowledge of this WMI namespace.
32081 00:47:01 (0) ** The security diagnostic is based on the WMI namespace expected defaults.
32082 00:47:01 (0) ** A specific WMI application can always require a security setup different
32083 00:47:01 (0) ** than the WMI security defaults.
32084 00:47:01 (0) **
32085 00:47:01 (0) ** WMI namespace security for 'ROOT/SERVICEMODEL': ..................................................................... MODIFIED.
32086 00:47:01 (1) !! ERROR: Default trustee 'EVERYONE' has been REMOVED!
32087 00:47:01 (0) ** - REMOVED ACE:
32088 00:47:01 (0) ** ACEType: &h0
32089 00:47:01 (0) ** ACCESS_ALLOWED_ACE_TYPE
32090 00:47:01 (0) ** ACEFlags: &h12
32091 00:47:01 (0) ** CONTAINER_INHERIT_ACE
32092 00:47:01 (0) ** INHERITED_ACE
32093 00:47:01 (0) ** ACEMask: &h13
32094 00:47:01 (0) ** WBEM_ENABLE
32095 00:47:01 (0) ** WBEM_METHOD_EXECUTE
32096 00:47:01 (0) ** WBEM_WRITE_PROVIDER
32097 00:47:01 (0) **
32098 00:47:01 (0) ** => The REMOVED ACE was part of the DEFAULT setup for the trustee.
32099 00:47:01 (0) ** Removing default security will cause some operations to fail!
32100 00:47:01 (0) ** It is possible to fix this issue by editing the security descriptor and adding the ACE.
32101 00:47:01 (0) ** For WMI namespaces, this can be done with 'WMIMGMT.MSC'.
32102 00:47:01 (0) ** Note: WMIDiag has no specific knowledge of this WMI namespace.
32103 00:47:01 (0) ** The security diagnostic is based on the WMI namespace expected defaults.
32104 00:47:01 (0) ** A specific WMI application can always require a security setup different
32105 00:47:01 (0) ** than the WMI security defaults.
32106 00:47:01 (0) **
32107 00:47:01 (0) **
32108 00:47:01 (0) ** DCOM security warning(s) detected: .................................................................................. 0.
32109 00:47:01 (0) ** DCOM security error(s) detected: .................................................................................... 3.
32110 00:47:01 (0) ** WMI security warning(s) detected: ................................................................................... 0.
32111 00:47:01 (0) ** WMI security error(s) detected: ..................................................................................... 3.
32112 00:47:01 (0) **
32113 00:47:01 (1) !! ERROR: Overall DCOM security status: ................................................................................ ERROR!
32114 00:47:01 (1) !! ERROR: Overall WMI security status: ................................................................................. ERROR!
32115 00:47:01 (0) ** - Started at 'Root' --------------------------------------------------------------------------------------------------------------
32116 00:47:01 (0) ** INFO: WMI permanent SUBSCRIPTION(S): ................................................................................ 2.
32117 00:47:01 (0) ** - ROOT/SUBSCRIPTION, MSFT_UCScenarioControl.Name="Microsoft WMI Updating Consumer Scenario Control".
32118 00:47:01 (0) ** 'SELECT * FROM __InstanceOperationEvent WHERE TargetInstance ISA 'MSFT_UCScenario''
32119 00:47:01 (0) ** - ROOT/SUBSCRIPTION, NTEventLogEventConsumer.Name="SCM Event Log Consumer".
32120 00:47:01 (0) ** 'select * from MSFT_SCMEventLogEvent'
32121 00:47:01 (0) **
32122 00:47:01 (0) ** WMI TIMER instruction(s): ........................................................................................... NONE.
32123 00:47:01 (0) ** WMI ADAP status: .................................................................................................... OK.
32124 00:47:01 (0) ** INFO: WMI namespace(s) requiring PACKET PRIVACY: .................................................................... 1 NAMESPACE(S)!
32125 00:47:01 (0) ** - ROOT/SERVICEMODEL.
32126 00:47:01 (0) ** => When remotely connecting, the namespace(s) listed require(s) the WMI client to
32127 00:47:01 (0) ** use an encrypted connection by specifying the PACKET PRIVACY authentication level.
32128 00:47:01 (0) ** (RPC_C_AUTHN_LEVEL_PKT_PRIVACY or PktPrivacy flags)
32129 00:47:01 (0) ** i.e. 'WMIC.EXE /NODE:"HOME" /AUTHLEVEL:Pktprivacy /NAMESPACE:\\\\ROOT\\SERVICEMODEL class __SystemSecurity'
32130 00:47:01 (0) **
32131 00:47:01 (0) ** WMI MONIKER CONNECTIONS: ............................................................................................ OK.
32132 00:47:01 (0) ** WMI CONNECTIONS: .................................................................................................... OK.
32133 00:47:01 (0) ** WMI GET operations: ................................................................................................. OK.
32134 00:47:01 (0) ** WMI MOF representations: ............................................................................................ OK.
32135 00:47:01 (0) ** WMI QUALIFIER access operations: .................................................................................... OK.
32136 00:47:01 (0) ** WMI ENUMERATION operations: ......................................................................................... OK.
32137 00:47:01 (0) ** WMI EXECQUERY operations: ........................................................................................... OK.
32138 00:47:01 (0) ** WMI GET VALUE operations: ........................................................................................... OK.
32139 00:47:01 (0) ** WMI WRITE operations: ............................................................................................... NOT TESTED.
32140 00:47:01 (0) ** WMI PUT operations: ................................................................................................. NOT TESTED.
32141 00:47:01 (0) ** WMI DELETE operations: .............................................................................................. NOT TESTED.
32142 00:47:01 (0) ** WMI static instances retrieved: ..................................................................................... 762.
32143 00:47:01 (0) ** WMI dynamic instances retrieved: .................................................................................... 0.
32144 00:47:01 (0) ** WMI instance request cancellations (to limit performance impact): ................................................... 0.
32145 00:47:01 (0) ** ----------------------------------------------------------------------------------------------------------------------------------
32146 00:47:01 (0) ** # of Event Log events BEFORE WMIDiag execution since the last 20 day(s):
32147 00:47:01 (0) ** DCOM: ............................................................................................................. 1574.
32148 00:47:01 (0) ** WINMGMT: .......................................................................................................... 0.
32149 00:47:01 (0) ** WMIADAPTER: ....................................................................................................... 0.
32150 00:47:01 (0) ** => Verify the WMIDiag LOG at line #23674 for more details.
32151 00:47:01 (0) **
32152 00:47:01 (0) ** # of additional Event Log events AFTER WMIDiag execution:
32153 00:47:01 (0) ** DCOM: ............................................................................................................. 0.
32154 00:47:01 (0) ** WINMGMT: .......................................................................................................... 0.
32155 00:47:01 (0) ** WMIADAPTER: ....................................................................................................... 0.
32156 00:47:01 (0) ** ----------------------------------------------------------------------------------------------------------------------------------
32157 00:47:01 (0) ** WMI Registry key setup: ............................................................................................. OK.
32158 00:47:01 (0) ** ----------------------------------------------------------------------------------------------------------------------------------
32159 00:47:01 (0) ** ----------------------------------------------------------------------------------------------------------------------------------
32160 00:47:01 (0) ** ----------------------------------------------------------------------------------------------------------------------------------
32161 00:47:01 (0) ** ----------------------------------------------------------------------------------------------------------------------------------
32162 00:47:01 (0) **
32163 00:47:01 (0) ** ----------------------------------------------------------------------------------------------------------------------------------
32164 00:47:01 (0) ** ------------------------------------------------------ WMI REPORT: END -----------------------------------------------------------
32165 00:47:01 (0) ** ----------------------------------------------------------------------------------------------------------------------------------
32166 00:47:01 (0) **
32167 00:47:01 (0) ** ERROR: WMIDiag detected issues that could prevent WMI to work properly!. Check 'C:\\DOCUMENTS AND SETTINGS\\OWNER\\LOCAL SETTINGS\\TEMP\\WMIDIAG-V2.0_XP___.CLI.RTM.32_HOME_2011.03.12_00.42.21.LOG' for details.
32168 00:47:01 (0) **
32169 00:47:01 (0) ** WMIDiag v2.0 ended on Saturday, March 12, 2011 at 00:47 (W:72 E:21 S:1).
Now, anyone who's smarter than me wanna enlighten a moron?