Help request for Spy-Agent.bf (Trojan.LinkOptimizer)

I have a Dell Windows XP Home Edition notebook, using McAfee Security Center
with VirusScan 5100, DAT file version 4943 created Jan 19 2007.

A few days ago VirusScan began complying about a trojan. Italian message:

Trovato cavallo di Troia
File: lpt2.exe
Nome cavallo di Troya: Spy-Agent.bf.dldr
Percorso file: c:\Programmi\File comuni\System
Stato: impossibile eseguire la pulizia
Verificare che il file non sia protetto in scrittura e riprovare.

In few words I understand McAfee recognize this to be a bug, but McAfee is not able to clean the virus.
I've tried every possible command, with no effect: Pulisci Quarantena Elimina.
It is not possible to remove neither rename the lpt2.exe file.
I went to McAfee web site (http://it.mcafee.com/virusInfo/default.asp?id=description&virus_k=140382)
but I just found: update to last anti virus engine and DAT file, which I already have.
I also see something about "system restore", but I understand it is just a final phase of the recovery.

I understand that the trojan has installed a new Windows service, using a new "hudden" Windows user, and it tries sometimes to activate this lpt2.exe program.

thanks for your support

--------
Logfile of HijackThis v1.99.1
Scan saved at 19.23.31, on 20/01/2007
Platform: Windows XP SP2 (WinNT 5.01.2600)
MSIE: Internet Explorer v7.00 (7.00.5730.0011)

Running processes:
C:\WINDOWS\System32\smss.exe
C:\WINDOWS\system32\winlogon.exe
C:\WINDOWS\system32\services.exe
C:\WINDOWS\system32\lsass.exe
C:\WINDOWS\system32\svchost.exe
C:\WINDOWS\System32\svchost.exe
C:\WINDOWS\System32\wltrysvc.exe
C:\WINDOWS\System32\bcmwltry.exe
C:\WINDOWS\system32\spoolsv.exe
C:\WINDOWS\Explorer.EXE
C:\Programmi\TortoiseSVN\bin\TSVNCache.exe
c:\programmi\mcafee.com\agent\mcdetect.exe
c:\PROGRA~1\mcafee.com\vso\mcshield.exe
C:\Programmi\Synaptics\SynTP\SynTPEnh.exe
C:\WINDOWS\system32\hkcmd.exe
C:\WINDOWS\system32\igfxpers.exe
C:\Programmi\Java\jre1.5.0_10\bin\jusched.exe
C:\WINDOWS\system32\igfxsrvc.exe
C:\WINDOWS\stsystra.exe
C:\WINDOWS\system32\WLTRAY.exe
C:\Programmi\Dell\QuickSet\quickset.exe
C:\Programmi\CyberLink\PowerDVD\DVDLauncher.exe
C:\PROGRA~1\mcafee.com\agent\mcagent.exe
C:\Programmi\Dell\Media Experience\DMXLauncher.exe
C:\Programmi\File comuni\InstallShield\UpdateService\issch.exe
C:\Programmi\McAfee.com\VSO\mcvsshld.exe
C:\PROGRA~1\McAfee.com\PERSON~1\MpfTray.exe
C:\Program Files\GlobespanVirata\Adsl\dslstat.exe
C:\Program Files\GlobespanVirata\Adsl\dslagent.exe
c:\progra~1\mcafee.com\vso\mcvsescn.exe
C:\Programmi\McAfee.com\VSO\oasclnt.exe
C:\WINDOWS\System32\DLA\DLACTRLW.EXE
C:\Programmi\iTunes\iTunesHelper.exe
C:\PROGRA~1\Nokia\NOKIAP~1\LAUNCH~1.EXE
C:\Programmi\Adobe\Photoshop Album Starter Edition\3.0\Apps\apdproxy.exe
C:\Programmi\Messenger\msmsgs.exe
C:\WINDOWS\system32\ctfmon.exe
c:\PROGRA~1\mcafee.com\agent\mctskshd.exe
C:\Programmi\File comuni\Microsoft Shared\VS7DEBUG\MDM.EXE
c:\progra~1\mcafee.com\vso\mcvsftsn.exe
C:\PROGRA~1\McAfee.com\PERSON~1\MPFSERVICE.exe
C:\Programmi\Dell\NICCONFIGSVC\NICCONFIGSVC.exe
C:\Programmi\Windows Resource Kits\Tools\srvany.exe
C:\WINDOWS\system32\svchost.exe
C:\Programmi\Subversion\bin\svnserve.exe
C:\Programmi\VMware\VMware Server\vmware-authd.exe
C:\Programmi\File comuni\VMware\VMware Virtual Image Editing\vmount2.exe
C:\WINDOWS\system32\vmnat.exe
C:\WINDOWS\system32\vmnetdhcp.exe
C:\Programmi\VMware\VMware Server\vmserverdWin32.exe
C:\Programmi\iPod\bin\iPodService.exe
C:\Programmi\File comuni\PCSuite\Services\ServiceLayer.exe
C:\PROGRA~1\McAfee.com\PERSON~1\MpfAgent.exe
C:\Programmi\IVT Corporation\BlueSoleil\BlueSoleil.exe
C:\Programmi\Mozilla Firefox\firefox.exe
C:\WINDOWS\system32\mmc.exe
C:\Documents and Settings\Luca\Documenti\Gestione_PC_Pascal\HijackThis.exe

R1 - HKCU\Software\Microsoft\Internet Explorer\Main,Search Bar = http://dellsearchedit.myway.com/samisc/dellsidebar.jhtml?p=DO
R0 - HKCU\Software\Microsoft\Internet Explorer\Main,Start Page = http://www.google.it/
R1 - HKLM\Software\Microsoft\Internet Explorer\Main,Default_Page_URL = http://go.microsoft.com/fwlink/?LinkId=69157
R1 - HKLM\Software\Microsoft\Internet Explorer\Main,Default_Search_URL = http://go.microsoft.com/fwlink/?LinkId=54896
R1 - HKLM\Software\Microsoft\Internet Explorer\Main,Search Page = http://go.microsoft.com/fwlink/?LinkId=54896
R0 - HKLM\Software\Microsoft\Internet Explorer\Main,Start Page = http://go.microsoft.com/fwlink/?LinkId=69157
R0 - HKCU\Software\Microsoft\Internet Explorer\Toolbar,LinksFolderName = Collegamenti
R3 - URLSearchHook: (no name) - {4D25F926-B9FE-4682-BF72-8AB8210D6D75} - C:\Programmi\MyWaySA\SrchAsDe\deSrcAs.dll
O2 - BHO: Adobe PDF Reader Link Helper - {06849E9F-C8D7-4D59-B87D-784B7D6BE0B3} - C:\Programmi\Adobe\Acrobat 7.0\ActiveX\AcroIEHelper.dll
O2 - BHO: (no name) - {4D25F921-B9FE-4682-BF72-8AB8210D6D75} - C:\Programmi\MyWaySA\SrchAsDe\deSrcAs.dll
O2 - BHO: DriveLetterAccess - {5CA3D70E-1895-11CF-8E15-001234567890} - C:\WINDOWS\System32\DLA\DLASHX_W.DLL
O2 - BHO: SSVHelper Class - {761497BB-D6F0-462C-B6EB-D4DAF1D92D43} - C:\Programmi\Java\jre1.5.0_10\bin\ssv.dll
O3 - Toolbar: McAfee VirusScan - {BA52B914-B692-46c4-B683-905236F6F655} - c:\progra~1\mcafee.com\vso\mcvsshl.dll
O3 - Toolbar: Yahoo! Toolbar con blocco Pop-Up - {EF99BD32-C1FB-11D2-892F-0090271D4F88} - C:\Programmi\Yahoo!\Companion\Installs\cpn\yt.dll
O4 - HKLM\..\Run: [SynTPEnh] C:\Programmi\Synaptics\SynTP\SynTPEnh.exe
O4 - HKLM\..\Run: [igfxtray] C:\WINDOWS\system32\igfxtray.exe
O4 - HKLM\..\Run: [igfxhkcmd] C:\WINDOWS\system32\hkcmd.exe
O4 - HKLM\..\Run: [igfxpers] C:\WINDOWS\system32\igfxpers.exe
O4 - HKLM\..\Run: [SunJavaUpdateSched] "C:\Programmi\Java\jre1.5.0_10\bin\jusched.exe"
O4 - HKLM\..\Run: [SigmatelSysTrayApp] stsystra.exe
O4 - HKLM\..\Run: [Dell Wireless Manager UI] C:\WINDOWS\system32\WLTRAY
O4 - HKLM\..\Run: [Dell QuickSet] C:\Programmi\Dell\QuickSet\quickset.exe
O4 - HKLM\..\Run: [DVDLauncher] "C:\Programmi\CyberLink\PowerDVD\DVDLauncher.exe"
O4 - HKLM\..\Run: [VSOCheckTask] "C:\PROGRA~1\McAfee.com\VSO\mcmnhdlr.exe" /checktask
O4 - HKLM\..\Run: [MCAgentExe] c:\PROGRA~1\mcafee.com\agent\mcagent.exe
O4 - HKLM\..\Run: [MCUpdateExe] C:\PROGRA~1\mcafee.com\agent\McUpdate.exe
O4 - HKLM\..\Run: [DMXLauncher] C:\Programmi\Dell\Media Experience\DMXLauncher.exe
O4 - HKLM\..\Run: [ISUSPM Startup] C:\PROGRA~1\FILECO~1\INSTAL~1\UPDATE~1\ISUSPM.exe -startup
O4 - HKLM\..\Run: [ISUSScheduler] "C:\Programmi\File comuni\InstallShield\UpdateService\issch.exe" -start
O4 - HKLM\..\Run: [VirusScan Online] C:\Programmi\McAfee.com\VSO\mcvsshld.exe
O4 - HKLM\..\Run: [MPFExe] C:\PROGRA~1\McAfee.com\PERSON~1\MpfTray.exe
O4 - HKLM\..\Run: [DSLSTATEXE] C:\Program Files\GlobespanVirata\Adsl\dslstat.exe icon
O4 - HKLM\..\Run: [DSLAGENTEXE] C:\Program Files\GlobespanVirata\Adsl\dslagent.exe
O4 - HKLM\..\Run: [OASClnt] C:\Programmi\McAfee.com\VSO\oasclnt.exe
O4 - HKLM\..\Run: [DLA] C:\WINDOWS\System32\DLA\DLACTRLW.EXE
O4 - HKLM\..\Run: [iTunesHelper] "C:\Programmi\iTunes\iTunesHelper.exe"
O4 - HKLM\..\Run: [QuickTime Task] "C:\Programmi\QuickTime\qttask.exe" -atboottime
O4 - HKLM\..\Run: [PCSuiteTrayApplication] C:\PROGRA~1\Nokia\NOKIAP~1\LAUNCH~1.EXE -startup
O4 - HKLM\..\Run: [Adobe Photo Downloader] "C:\Programmi\Adobe\Photoshop Album Starter Edition\3.0\Apps\apdproxy.exe"
O4 - HKCU\..\Run: [ModemOnHold] C:\Programmi\NetWaiting\netwaiting.exe
O4 - HKCU\..\Run: [Skype] "C:\Programmi\Skype\Phone\Skype.exe" /nosplash /minimized
O4 - HKCU\..\Run: [MSMSGS] "C:\Programmi\Messenger\msmsgs.exe" /background
O4 - HKCU\..\Run: [ctfmon.exe] C:\WINDOWS\system32\ctfmon.exe
O8 - Extra context menu item: E&sporta in Microsoft Excel - res://C:\PROGRA~1\MICROS~2\OFFICE11\EXCEL.EXE/3000
O9 - Extra button: (no name) - {08B0E5C0-4FCB-11CF-AAA5-00401C608501} - C:\Programmi\Java\jre1.5.0_10\bin\ssv.dll
O9 - Extra 'Tools' menuitem: Sun Java Console - {08B0E5C0-4FCB-11CF-AAA5-00401C608501} - C:\Programmi\Java\jre1.5.0_10\bin\ssv.dll
O9 - Extra button: Ricerche - {92780B25-18CC-41C8-B9BE-3C9C571A8263} - C:\PROGRA~1\MICROS~2\OFFICE11\REFIEBAR.DLL
O9 - Extra button: (no name) - {e2e2dd38-d088-4134-82b7-f2ba38496583} - %windir%\Network Diagnostic\xpnetdiag.exe (file missing)
O9 - Extra 'Tools' menuitem: @xpsp3res.dll,-20001 - {e2e2dd38-d088-4134-82b7-f2ba38496583} - %windir%\Network Diagnostic\xpnetdiag.exe (file missing)
O9 - Extra button: Messenger - {FB5F1910-F110-11d2-BB9E-00C04F795683} - C:\Programmi\Messenger\msmsgs.exe
O9 - Extra 'Tools' menuitem: Windows Messenger - {FB5F1910-F110-11d2-BB9E-00C04F795683} - C:\Programmi\Messenger\msmsgs.exe
O11 - Options group: [INTERNATIONAL] International*
O16 - DPF: {17492023-C23A-453E-A040-C7C580BBF700} (Windows Genuine Advantage Validation Tool) - http://go.microsoft.com/fwlink/?linkid=39204
O16 - DPF: {2A93D1F1-31FF-434A-ACD3-458081A06FEA} - http://td8eau9td.com/e5ee8e70/50310/1/xp/FreeAccess.cab
O16 - DPF: {EB387D2F-E27B-4D36-979E-847D1036C65D} (QDiagHUpdateObj Class) - http://h30043.www3.hp.com/aio/en/check/qdiagh.cab?326
O18 - Protocol: ms-help - {314111C7-A502-11D2-BBCA-00C04F8EC294} - C:\Programmi\File comuni\Microsoft Shared\Help\hxds.dll
O18 - Protocol: skype4com - {FFC8B962-9B40-4DFF-9458-1830C7DD7F5D} - C:\PROGRA~1\FILECO~1\Skype\SKYPE4~1.DLL
O18 - Filter: application/x-internet-signup - {A173B69A-1F9B-4823-9FDA-412F641E65D6} - C:\Programmi\Tiscali\Tiscali Internet\dlls\tiscalifilter.dll
O20 - Winlogon Notify: igfxcui - C:\WINDOWS\SYSTEM32\igfxdev.dll
O20 - Winlogon Notify: WgaLogon - C:\WINDOWS\SYSTEM32\WgaLogon.dll
O23 - Service: Apache2.2 - Unknown owner - C:\Programmi\Apache Software Foundation\Apache2.2\bin\httpd.exe" -k runservice (file missing)
O23 - Service: BlueSoleil Hid Service - Unknown owner - C:\Programmi\IVT Corporation\BlueSoleil\BTNtService.exe
O23 - Service: InstallDriver Table Manager (IDriverT) - Macrovision Corporation - C:\Programmi\File comuni\InstallShield\Driver\11\Intel 32\IDriverT.exe
O23 - Service: iPodService - Apple Computer, Inc. - C:\Programmi\iPod\bin\iPodService.exe
O23 - Service: McAfee WSC Integration (McDetect.exe) - McAfee, Inc - c:\programmi\mcafee.com\agent\mcdetect.exe
O23 - Service: McAfee.com McShield (McShield) - McAfee Inc. - c:\PROGRA~1\mcafee.com\vso\mcshield.exe
O23 - Service: McAfee Task Scheduler (McTskshd.exe) - McAfee, Inc - c:\PROGRA~1\mcafee.com\agent\mctskshd.exe
O23 - Service: McAfee SecurityCenter Update Manager (mcupdmgr.exe) - McAfee, Inc - C:\PROGRA~1\McAfee.com\Agent\mcupdmgr.exe
O23 - Service: McAfee Personal Firewall Service (MpfService) - McAfee Corporation - C:\PROGRA~1\McAfee.com\PERSON~1\MPFSERVICE.exe
O23 - Service: NICCONFIGSVC - Dell Inc. - C:\Programmi\Dell\NICCONFIGSVC\NICCONFIGSVC.exe
O23 - Service: PostgreSQL Database Server 8.1 (pgsql-8.1) - PostgreSQL Global Development Group - C:\Programmi\PostgreSQL\8.1\bin\pg_ctl.exe
O23 - Service: ServiceLayer - Nokia. - C:\Programmi\File comuni\PCSuite\Services\ServiceLayer.exe
O23 - Service: snvserve - Unknown owner - C:\Programmi\Windows Resource Kits\Tools\srvany.exe
O23 - Service: VMware Authorization Service (VMAuthdService) - VMware, Inc. - C:\Programmi\VMware\VMware Server\vmware-authd.exe
O23 - Service: VMware DHCP Service (VMnetDHCP) - VMware, Inc. - C:\WINDOWS\system32\vmnetdhcp.exe
O23 - Service: VMware Virtual Mount Manager Extended (vmount2) - VMware, Inc. - C:\Programmi\File comuni\VMware\VMware Virtual Image Editing\vmount2.exe
O23 - Service: VMware Registration Service (vmserverdWin32) - VMware, Inc. - C:\Programmi\VMware\VMware Server\vmserverdWin32.exe
O23 - Service: VMware NAT Service - VMware, Inc. - C:\WINDOWS\system32\vmnat.exe
O23 - Service: Dell Wireless WLAN Tray Service (wltrysvc) - Unknown owner - C:\WINDOWS\System32\wltrysvc.exe