Reboot shortly after Startup

This is not a malware problem. You should post in the Software or Hardware Forum.

Possible because you have your system set to reboot on error. Youy can disable this and maybe a BSOD will occur and you will see an error message. See this:

http://www.microsoft.com/windowsxp/using/helpandsupport/learnmore/russel_02may13.mspx

Maybe you did not install new hardware but what about the new software and drivers you loaded. Some may be for a Motorola USB modem?? Below is a little of what I saw in your logs:

Code:

2008-02-10 15:45 . 2008-02-10 15:45 0 --ah----- C:\WINDOWS\system32\drivers\MsftWdf_Kernel_01005_Coinstaller_Critical.Wdf
2008-02-10 15:45 . 2008-02-10 15:45 0 --ah----- C:\WINDOWS\system32\drivers\Msft_Kernel_motmodem_01005.Wdf
2008-02-10 11:00 . 2008-02-10 11:00 <DIR> d-------- C:\Program Files\Common Files\Motorola Shared
2008-02-10 11:00 . 2006-11-13 14:45 1,419,232 --a------ C:\WINDOWS\system32\wdfcoinstaller01005.dll
2008-02-10 11:00 . 2008-02-10 11:00 92,064 --a------ C:\Documents and Settings\David\mqdmmdm.sys
2008-02-10 11:00 . 2008-02-10 11:00 79,328 --a------ C:\Documents and Settings\David\mqdmserd.sys
2008-02-10 11:00 . 2008-02-10 11:00 66,656 --a------ C:\Documents and Settings\David\mqdmbus.sys
2008-02-10 11:00 . 2007-02-27 14:31 21,504 --a------ C:\WINDOWS\system32\drivers\motmodem.sys
2008-02-10 11:00 . 2008-02-10 11:00 9,232 --a------ C:\Documents and Settings\David\mqdmmdfl.sys
2008-02-10 11:00 . 2008-02-10 11:00 6,208 --a------ C:\Documents and Settings\David\mqdmcmnt.sys
2008-02-10 11:00 . 2008-02-10 11:00 5,936 --a------ C:\Documents and Settings\David\mqdmwhnt.sys
2008-02-10 11:00 . 2008-02-10 11:00 4,048 --a------ C:\Documents and Settings\David\mqdmcr.sys
 
 
"C:\Documents and Settings\All Users\Desktop\"
gpsinfo.lnk   Feb 22 2006         481  "Gpsinfo.lnk"
 
"C:\WINDOWS\"
modeml~1.txt  Feb 11 2008       93606  "ModemLog_Motorola USB Modem.txt"
modeml~2.txt  Sep 13 2007       26628  "ModemLog_Motorola USB Modem #2.txt"
 
"C:\WINDOWS\system32\drivers\"
msftwd~1.wdf  Feb 10 2008           0  "MsftWdf_Kernel_01005_Coinstaller_Critical.Wdf"
msft_k~1.wdf  Feb 10 2008           0  "Msft_Kernel_motmodem_01005.Wdf"

Perhaps the below software items were just installed:[QUOTE]
GPS Information
Motorola Driver Installation
Motorola Phone Tools[/QUOTE]

SInce it does not happen in safe boot mode, you can use MSconfig and diagnostic startup mode and then slowly add little bits into MSconfig to load at startup and see what happens. You maybe be able to locate the problem driver. Or you could work in reverse and enable everything (i.e., normal startup) and then deselect all the drivers and things you see for your USB modem to see if that changes anything). Either way this is not a problem for the Malware Forum.