I got on Tonight and the computer is running at 100% and i checked my Security logs and it shows a bunch of high Threats so of them reads the following

The file/folder/drive INDEX.MAP has been changed!

Filename: INDEX.MAP
Location: C:\WINDOWS\system32\wbem\Repository\FS

Last known properties:
Size: 556 bytes
Owner: BUILTIN\Administrators
Date Created: 11/29/01
Time Created: 18:28:02

Date last modified: 02/24/04
Time last modified: 05:32:57

Date last accessed: 02/24/04
Time last accessed: 05:32:57

Current properties:
Size: 556 bytes
Owner: BUILTIN\Administrators
Date Created: 11/29/01

The file/folder/drive FS has been changed!

Filename: FS
Location: C:\WINDOWS\system32\wbem\Repository

Last known properties:
Size: 0 bytes
Owner: BUILTIN\Administrators
Date Created: 11/29/01
Time Created: 18:27:46

Date last modified: 02/24/04
Time last modified: 05:32:58

Date last accessed: 02/24/04
Time last accessed: 05:32:58

Current properties:
Size: 0 bytes
Owner: BUILTIN\Administrators
Date Created: 11/29/01
Time Created: 18:27:46

Date last modified: 02/25/04
Time last modified: 15:27:54

Date last accessed: 02/25/04
Time last accessed: 15:27:54
and
The file/folder/drive edb.chk has been changed!

Filename: edb.chk
Location: C:\WINDOWS\system32\CatRoot2

Last known properties:
Size: 8192 bytes
Owner: BUILTIN\Administrators
Date Created: 11/29/01
Time Created: 10:21:31

Date last modified: 02/22/04
Time last modified: 18:35:36

Date last accessed: 02/23/04
Time last accessed: 17:23:41

Current properties:
Size: 8192 bytes
Owner: BUILTIN\Administrators
Date Created: 11/29/01
Time Created: 10:21:31

Date last modified: 02/24/04
Time last modified: 18:17:22

Date last accessed: 02/24/04
Time last accessed: 18:17:22

More Information:
Size Difference: 0 bytes
LANguard S.I.M. Incident ID:2307
'

what could this be. thanks