Here are the last four logs, in what I believe to be sequential order. I'm not seeing an answer, but perhaps it's my uneducated eye.
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[11/5/2009 10:50:56 PM 13e8] Parent 5032 sequence 738181
[11/5/2009 10:50:56 PM 13e8] OPTION: -v <volume> 0 was specified
[11/5/2009 10:50:56 PM 13e8] OPTION: -f <flush> was specified
[11/5/2009 10:50:56 PM 13e8] GetMountedVolumeLetter: uniqueId = \??\Volume{068a4093-ca9f-11de-95b4-0018f32b5334}\
[11/5/2009 10:50:56 PM 13e8] MountedRestoreHelper::GetMountedVolumeLetter() - got volume at Z:\
[11/5/2009 10:50:56 PM 13e8] File $LDR$ found on volume Z:\
[11/5/2009 10:50:56 PM 13e8] File $WIN_NT$.~BT found on volume Z:\
[11/5/2009 10:50:56 PM 13e8] File 207f729c2ac1298180 found on volume Z:\
[11/5/2009 10:50:56 PM 13e8] File AdobeDebug.txt found on volume Z:\
[11/5/2009 10:50:56 PM 13e8] File AUTOEXEC.BAT found on volume Z:\
[11/5/2009 10:50:56 PM 13e8] Mounted volume is Z:
[11/5/2009 10:50:56 PM 13e8] Opening raw volume
[11/5/2009 10:50:56 PM 13e8] Flushing
\\.\Z:
[11/5/2009 10:50:57 PM 13e8] Successful flush
[11/5/2009 10:50:57 PM 13e8] Locking volume
[11/5/2009 10:52:09 PM 13e8] Dismounting volume
[11/5/2009 10:52:09 PM 13e8] Successful dismount
[11/5/2009 10:52:09 PM 13e8] Unlocking volume
[11/5/2009 10:52:13 PM 13e8] Returning 90
[11/5/2009 10:52:22 PM c44] Parent 5032 sequence 824652
[11/5/2009 10:52:22 PM c44] OPTION: -v <volume> 1 was specified
[11/5/2009 10:52:22 PM c44] MountedRestoreHelper::GetMountedVolumeLetter() - unable to get volume name
[11/5/2009 10:52:22 PM c44] MountedRestoreHelper::GetMountedVolumeLetter() - failed getting volume letter
[11/5/2009 10:52:22 PM c44] WARN : Unable to locate the mounted volume letter - sleeping 1000ms
[11/5/2009 10:52:23 PM c44] GetMountedVolumeLetter: uniqueId = \??\Volume{068a409d-ca9f-11de-95b4-0018f32b5334}\
[11/5/2009 10:52:23 PM c44] MountedRestoreHelper::GetMountedVolumeLetter() - got volume at Z:\
[11/5/2009 10:52:26 PM c44] File $LDR$ found on volume Z:\
[11/5/2009 10:52:26 PM c44] File $WIN_NT$.~BT found on volume Z:\
[11/5/2009 10:52:26 PM c44] File 207f729c2ac1298180 found on volume Z:\
[11/5/2009 10:52:26 PM c44] File AdobeDebug.txt found on volume Z:\
[11/5/2009 10:52:26 PM c44] File AUTOEXEC.BAT found on volume Z:\
[11/5/2009 10:52:26 PM c44] Mounted volume is Z:
[11/5/2009 10:52:26 PM c44] Returning 90
[11/5/2009 10:52:26 PM 1074] Parent 5032 sequence 828724
[11/5/2009 10:52:26 PM 1074] OPTION: -v <volume> 1 was specified
[11/5/2009 10:52:26 PM 1074] OPTION: -e <explore> was specified
[11/5/2009 10:52:26 PM 1074] GetMountedVolumeLetter: uniqueId = \??\Volume{068a409d-ca9f-11de-95b4-0018f32b5334}\
[11/5/2009 10:52:26 PM 1074] MountedRestoreHelper::GetMountedVolumeLetter() - got volume at Z:\
[11/5/2009 10:52:26 PM 1074] File $LDR$ found on volume Z:\
[11/5/2009 10:52:26 PM 1074] File $WIN_NT$.~BT found on volume Z:\
[11/5/2009 10:52:26 PM 1074] File 207f729c2ac1298180 found on volume Z:\
[11/5/2009 10:52:26 PM 1074] File AdobeDebug.txt found on volume Z:\
[11/5/2009 10:52:26 PM 1074] File AUTOEXEC.BAT found on volume Z:\
[11/5/2009 10:52:26 PM 1074] Mounted volume is Z:
[11/5/2009 10:52:26 PM 1074] Opening Z:\...
[11/5/2009 10:52:26 PM 1074] Returning 90
[11/5/2009 4:00:37 PM e7c] Parent 4488 sequence 973961
[11/5/2009 4:00:37 PM e7c] OPTION: -v <volume> 0 was specified
[11/5/2009 4:00:37 PM e7c] OPTION: -i <iteration> 16 was specified
[11/5/2009 4:00:37 PM e7c] OPTION: -d <delete> \Documents and Settings\NetworkService\Local Settings\Temp was specified
[11/5/2009 4:00:37 PM e7c] GetMountedVolumeLetter: uniqueId = \??\Volume{27d55f42-ca65-11de-897e-0018f32b5334}\
[11/5/2009 4:00:37 PM e7c] MountedRestoreHelper::GetMountedVolumeLetter() - got volume at Z:\
[11/5/2009 4:00:37 PM e7c] File $LDR$ found on volume Z:\
[11/5/2009 4:00:37 PM e7c] File $WIN_NT$.~BT found on volume Z:\
[11/5/2009 4:00:37 PM e7c] File 207f729c2ac1298180 found on volume Z:\
[11/5/2009 4:00:37 PM e7c] File AdobeDebug.txt found on volume Z:\
[11/5/2009 4:00:37 PM e7c] File AUTOEXEC.BAT found on volume Z:\
[11/5/2009 4:00:37 PM e7c] Mounted volume is Z:
[11/5/2009 4:00:37 PM e7c] Returning 90
[11/5/2009 10:52:26 PM 1200] Parent 5032 sequence 828708
[11/5/2009 10:52:26 PM 1200] OPTION: -v <volume> 1 was specified
[11/5/2009 10:52:26 PM 1200] GetMountedVolumeLetter: uniqueId = \??\Volume{068a409d-ca9f-11de-95b4-0018f32b5334}\
[11/5/2009 10:52:26 PM 1200] MountedRestoreHelper::GetMountedVolumeLetter() - got volume at Z:\
[11/5/2009 10:52:26 PM 1200] File $LDR$ found on volume Z:\
[11/5/2009 10:52:26 PM 1200] File $WIN_NT$.~BT found on volume Z:\
[11/5/2009 10:52:26 PM 1200] File 207f729c2ac1298180 found on volume Z:\
[11/5/2009 10:52:26 PM 1200] File AdobeDebug.txt found on volume Z:\
[11/5/2009 10:52:26 PM 1200] File AUTOEXEC.BAT found on volume Z:\
[11/5/2009 10:52:26 PM 1200] Mounted volume is Z:
[11/5/2009 10:52:26 PM 1200] Returning 90