Gracias.
He hecho en parte lo que me dijiste, pero te pongo ya el listado Hijackthis
Por ahora solo he descargado el Ewido (es que ha tardado 5 horas en escanear todos los discos duros) y actualizado. Escaneo completo en modo a prueba de fallos.

Ha eliminado:
C:\Program Files\Common Files\uooo\uoood\uoooc.dll -> Downloader.Small : Cleaned with backup
C:\Program Files\Common Files\uooo\uoool.exe -> Downloader.TSUpdate.p : Cleaned with backup
C:\WINDOWS\system32\mecomput.dll -> Spyware.Look2Me : Cleaned with backup
C:\WINDOWS\system32\pkvaw.dat -> Downloader.Qoologic.at : Cleaned with backup
y un montón de cookies.

He reiniciado, y he vuelto a hacer un escaneo rápido. Este es el informe:

[1696] C:\WINDOWS\system32\kxdlv1.dll -> Spyware.Look2Me : Error during cleaning
[212] C:\WINDOWS\system32\kxdlv1.dll -> Spyware.Look2Me : Error during cleaning
C:\WINDOWS\system32\fdcsjjj.exe -> Trojan.Pakes : Cleaned with backup
C:\WINDOWS\system32\fwlek.dll -> Downloader.Small : Cleaned with backup
C:\WINDOWS\system32\pkvaw.dat -> Downloader.Qoologic.at : Cleaned with backup

y el informe de ahora mismo del Hijack This es éste:


Logfile of HijackThis v1.99.1
Scan saved at 21:05:41, on 09/12/2005
Platform: Windows XP SP2 (WinNT 5.01.2600)
MSIE: Internet Explorer v6.00 SP2 (6.00.2900.2180)

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\rundll32.exe
C:\WINDOWS\system32\spoolsv.exe
C:\WINDOWS\Explorer.EXE
C:\Program Files\Google\Google Desktop Search\GoogleDesktop.exe
C:\Program Files\Java\jre1.5.0_05\bin\jusched.exe
C:\Program Files\D-Tools\daemon.exe
C:\Program Files\Common Files\Real\Update_OB\realsched.exe
C:\Program Files\eSnips\ClientGW.exe
C:\Program Files\QuickTime\qttask.exe
C:\Program Files\AVPersonal\AVGNT.EXE
C:\Program Files\Google\Google Talk\googletalk.exe
C:\Program Files\Common Files\VCClient\VCClient.exe
C:\Program Files\Common Files\VCClient\VCMain.exe
C:\Program Files\Kerio\WinRoute Firewall\WrCtrl.exe
C:\Program Files\Google\Google Desktop Search\GoogleDesktopIndex.exe
C:\Program Files\DLExpert\DLExpert.exe
C:\Program Files\AVPersonal\AVGUARD.EXE
C:\Program Files\AVPersonal\AVWUPSRV.EXE
C:\Program Files\Google\Google Desktop Search\GoogleDesktopCrawl.exe
C:\Program Files\ewido\security suite\ewidoctrl.exe
C:\Program Files\ewido\security suite\ewidoguard.exe
C:\Program Files\Google Desktop Extreme\Google Desktop Extreme.exe
C:\Program Files\OpenOffice.org 2.0\program\soffice.exe
C:\Program Files\OpenOffice.org 2.0\program\soffice.BIN
C:\WINDOWS\system32\nvsvc32.exe
C:\Program Files\Kerio\WinRoute Firewall\winroute.exe
C:\Program Files\ewido\security suite\SecuritySuite.exe
C:\WINDOWS\system32\NOTEPAD.EXE
C:\Program Files\Mozilla Firefox\firefox.exe
C:\Documents and Settings\Fenix\Desktop\SW\HijackThis.exe

R0 - HKCU\Software\Microsoft\Internet Explorer\Main,Start Page =
R0 - HKLM\Software\Microsoft\Internet Explorer\Main,Start Page =
O3 - Toolbar: eSnips - {ED1184DA-E57E-4480-99D0-A16809037F54} - C:\Program Files\eSnips\SnipBar.dll
O4 - HKLM\..\Run: [NvCplDaemon] RUNDLL32.EXE C:\WINDOWS\system32\NvCpl.dll,NvStartup
O4 - HKLM\..\Run: [nwiz] nwiz.exe /install
O4 - HKLM\..\Run: [NvMediaCenter] RUNDLL32.EXE C:\WINDOWS\system32\NvMcTray.dll,NvTaskbarInit
O4 - HKLM\..\Run: [Google Desktop Search] "C:\Program Files\Google\Google Desktop Search\GoogleDesktop.exe" /startup
O4 - HKLM\..\Run: [NeroFilterCheck] C:\WINDOWS\system32\NeroCheck.exe
O4 - HKLM\..\Run: [SunJavaUpdateSched] C:\Program Files\Java\jre1.5.0_05\bin\jusched.exe
O4 - HKLM\..\Run: [DAEMON Tools-1033] "C:\Program Files\D-Tools\daemon.exe" -lang 3082
O4 - HKLM\..\Run: [TkBellExe] "C:\Program Files\Common Files\Real\Update_OB\realsched.exe" -osboot
O4 - HKLM\..\Run: [eSnips] "C:\Program Files\eSnips\ClientGW.exe"
O4 - HKLM\..\Run: [IMJPMIG8.1] "C:\WINDOWS\IME\imjp8_1\IMJPMIG.EXE" /Spoil /RemAdvDef /Migration32
O4 - HKLM\..\Run: [MSPY2002] C:\WINDOWS\system32\IME\PINTLGNT\ImScInst.exe /SYNC
O4 - HKLM\..\Run: [PHIME2002ASync] C:\WINDOWS\system32\IME\TINTLGNT\TINTSETP.EXE /SYNC
O4 - HKLM\..\Run: [PHIME2002A] C:\WINDOWS\system32\IME\TINTLGNT\TINTSETP.EXE /IMEName
O4 - HKLM\..\Run: [QuickTime Task] "C:\Program Files\QuickTime\qttask.exe" -atboottime
O4 - HKLM\..\Run: [AVGCtrl] "C:\Program Files\AVPersonal\AVGNT.EXE" /min
O4 - HKCU\..\Run: [googletalk] "C:\Program Files\Google\Google Talk\googletalk.exe" /autostart
O4 - HKCU\..\Run: [CU1] C:\Program Files\Common Files\VCClient\VCClient.exe
O4 - HKCU\..\Run: [CU2] C:\Program Files\Common Files\VCClient\VCMain.exe
O4 - HKCU\..\Run: [WrCtrl] "C:\Program Files\Kerio\WinRoute Firewall\WrCtrl.exe"
O4 - Startup: Google Desktop Extreme.lnk = ?
O4 - Startup: OpenOffice.org 2.0.lnk = C:\Program Files\OpenOffice.org 2.0\program\quickstart.exe
O4 - Global Startup: Adobe Gamma Loader.lnk = C:\Program Files\Common Files\Adobe\Calibration\Adobe Gamma Loader.exe
O4 - Global Startup: DLExpert.lnk = C:\Program Files\DLExpert\DLExpert.exe
O4 - Global Startup: Inicio rápido de Adobe Reader.lnk = C:\Program Files\Adobe\Acrobat 7.0\Reader\reader_sl.exe
O4 - Global Startup: xjih.exe
O8 - Extra context menu item: &Download by DLExpert (Faster) - C:\Program Files\DLExpert\get.htm
O8 - Extra context menu item: Download &All by DLExpert (Faster) - C:\Program Files\DLExpert\getall.htm
O8 - Extra context menu item: E&xportar a Microsoft Excel - res://C:\PROGRA~1\MICROS~2\OFFICE11\EXCEL.EXE/3000
O8 - Extra context menu item: Snip to my eSnips account - C:\Program Files\eSnips\res\SnipIt.htm
O9 - Extra button: (no name) - {08B0E5C0-4FCB-11CF-AAA5-00401C608501} - C:\Program Files\Java\jre1.5.0_05\bin\npjpi150_05.dll
O9 - Extra 'Tools' menuitem: Sun Java Console - {08B0E5C0-4FCB-11CF-AAA5-00401C608501} - C:\Program Files\Java\jre1.5.0_05\bin\npjpi150_05.dll
O9 - Extra button: Run WinHTTrack - {36ECAF82-3300-8F84-092E-AFF36D6C7040} - C:\Program Files\WinHTTrack\WinHTTrackIEBar.dll
O9 - Extra 'Tools' menuitem: Launch WinHTTrack - {36ECAF82-3300-8F84-092E-AFF36D6C7040} - C:\Program Files\WinHTTrack\WinHTTrackIEBar.dll
O9 - Extra button: DLExpert - {4AB89EA8-E2B8-11d4-AE71-00D00925CF52} - C:\Program Files\DLExpert\DLExpert.exe
O9 - Extra 'Tools' menuitem: &DLExpert - {4AB89EA8-E2B8-11d4-AE71-00D00925CF52} - C:\Program Files\DLExpert\DLExpert.exe
O9 - Extra button: Referencia - {92780B25-18CC-41C8-B9BE-3C9C571A8263} - C:\PROGRA~1\MICROS~2\OFFICE11\REFIEBAR.DLL
O9 - Extra button: Messenger - {FB5F1910-F110-11d2-BB9E-00C04F795683} - C:\Program Files\Messenger\msmsgs.exe
O9 - Extra 'Tools' menuitem: Windows Messenger - {FB5F1910-F110-11d2-BB9E-00C04F795683} - C:\Program Files\Messenger\msmsgs.exe
O16 - DPF: {6414512B-B978-451D-A0D8-FCFDF33E833C} (WUWebControl Class) - http://update.microsoft.com/windowsupdate/v6/V5Controls/en/x86/client/wuweb_site.cab?1128683729476
O17 - HKLM\System\CCS\Services\Tcpip\..\{C78D3709-2D14-42D4-B3D1-672F3F731ECE}: NameServer = 194.179.1.100,194.179.1.101
O18 - Protocol: msnim - {828030A1-22C1-4009-854F-8E305202313F} - "C:\PROGRA~1\MSNMES~1\msgrapp.dll" (file missing)
O20 - Winlogon Notify: policies - C:\WINDOWS\system32\l4r00e9meh.dll
O23 - Service: AntiVir Service (AntiVirService) - H+BEDV Datentechnik GmbH - C:\Program Files\AVPersonal\AVGUARD.EXE
O23 - Service: AntiVir Update (AVWUpSrv) - H+BEDV Datentechnik GmbH, Germany - C:\Program Files\AVPersonal\AVWUPSRV.EXE
O23 - Service: ewido security suite control - ewido networks - C:\Program Files\ewido\security suite\ewidoctrl.exe
O23 - Service: ewido security suite guard - ewido networks - C:\Program Files\ewido\security suite\ewidoguard.exe
O23 - Service: InstallDriver Table Manager (IDriverT) - Macrovision Corporation - C:\Program Files\Common Files\InstallShield\Driver\11\Intel 32\IDriverT.exe
O23 - Service: MATLAB Server (matlabserver) - Unknown owner - C:\MATLAB6p5\webserver\bin\win32\matlabserver.exe
O23 - Service: NVIDIA Display Driver Service (NVSvc) - NVIDIA Corporation - C:\WINDOWS\system32\nvsvc32.exe
O23 - Service: Kerio WinRoute Firewall (WinRoute) - Kerio Technologies - C:\Program Files\Kerio\WinRoute Firewall\winroute.exe

Todo lo que pone eSnips es algo que he yo he instaldo, no es adware.

Voy a hacer ahora los escaneos online... y si sigue igual, descargaré el Spy Sweper también.
Muchas gracias.