Thanks for your time.

The report shows this:

a-squared 4.5.0.43 2009.11.29 -
AhnLab-V3 5.0.0.2 2009.11.28 -
AntiVir 7.9.1.79 2009.11.29 -
Antiy-AVL 2.0.3.7 2009.11.27 -
Authentium 5.2.0.5 2009.11.29 -
Avast 4.8.1351.0 2009.11.29 -
AVG 8.5.0.426 2009.11.29 -
BitDefender 7.2 2009.11.30 -
CAT-QuickHeal 10.00 2009.11.28 -
ClamAV 0.94.1 2009.11.29 -
Comodo 3083 2009.11.30 -
DrWeb 5.0.0.12182 2009.11.30 -
eSafe 7.0.17.0 2009.11.29 -
eTrust-Vet 35.1.7146 2009.11.27 -
F-Prot 4.5.1.85 2009.11.29 -
F-Secure 9.0.15370.0 2009.11.29 -
Fortinet 4.0.14.0 2009.11.29 -
GData 19 2009.11.30 -
Ikarus T3.1.1.74.0 2009.11.29 -
K7AntiVirus 7.10.906 2009.11.27 -
Kaspersky 7.0.0.125 2009.11.30 -
McAfee 5817 2009.11.29 -
McAfee+Artemis 5817 2009.11.29 -
McAfee-GW-Edition 6.8.5 2009.11.29 Heuristic.BehavesLike.Exploit.CodeExec.FFFF
Microsoft 1.5302 2009.11.29 -
NOD32 4647 2009.11.29 -
Norman 6.03.02 2009.11.27 -
nProtect 2009.1.8.0 2009.11.28 -
Panda 10.0.2.2 2009.11.29 -
PCTools 7.0.3.5 2009.11.30 -
Prevx 3.0 2009.11.30 -
Rising 22.23.06.04 2009.11.29 -
Sophos 4.48.0 2009.11.30 -
Sunbelt 3.2.1858.2 2009.11.29 -
Symantec 1.4.4.12 2009.11.30 -
TheHacker 6.5.0.2.081 2009.11.28 -
TrendMicro 9.100.0.1001 2009.11.29 -
VBA32 3.12.12.0 2009.11.30 -
ViRobot 2009.11.28.2060 2009.11.28 -
VirusBuster 5.0.21.0 2009.11.29 -
Information additionnelle
File size: 277784 bytes
MD5...: 07d09fa032b2be9bff4f89be9d95b942
SHA1..: 7977a7790d0d427af51d1394be72e7cdf3306dab
SHA256: da6ac05d2e4a0f079901c233412dab3cbad37de117e336f5d6 0043c31a07d1b6
ssdeep: 6144:ejqSZFFV9Fn4qH2Pt5RU+vrchMfuLOl7ImkCM5/:9SZFFVPn4s8cG2Liza/
PEiD..: -
PEInfo: -
RDS...: NSRL Reference Data Set
-
pdfid.: -
trid..: Autodesk FLIC Image File (extensions: flc, fli, cel) (100.0%)
sigcheck:
publisher....: n/a
copyright....: n/a
product......: n/a
description..: n/a
original name: n/a
internal name: n/a
file version.: n/a
comments.....: n/a
signers......: -
signing date.: -
verified.....: Unsigned

It looks like false positive then.
I'm really out of ideas

It’s okay. Thanks for your time. I really appreciated it.
The problem is still there....and now, sometimes, I got a pop-up on my home browser page.
I give you a last Hijack this log. Maybe you’ll see something wrong. If not...well...it’s ok.
I see that I’m not the only one to have this kind of problem. If you got an idea, don’t hesitate. I will try it.

Logfile of Trend Micro HijackThis v2.0.2
Scan saved at 07:08:51, on 2009-12-01
Platform: Windows Vista SP2 (WinNT 6.00.1906)
MSIE: Internet Explorer v8.00 (8.00.6001.18828)
Boot mode: Normal

Running processes:
C:\Windows\system32\taskeng.exe
C:\Windows\system32\Dwm.exe
C:\Windows\Explorer.EXE
C:\Windows\RtHDVCpl.exe
C:\Program Files\TOSHIBA\ConfigFree\NDSTray.exe
C:\Program Files\Camera Assistant Software for Toshiba\traybar.exe
C:\Program Files\TOSHIBA\Power Saver\TPwrMain.exe
C:\Program Files\ltmoh\ltmoh.exe
C:\Program Files\Synaptics\SynTP\SynTPEnh.exe
C:\Windows\System32\rundll32.exe
C:\Program Files\Camera Assistant Software for Toshiba\CEC_MAIN.exe
C:\Program Files\Kaspersky Lab\Kaspersky Internet Security 2010\avp.exe
C:\Program Files\Java\jre6\bin\jusched.exe
C:\Program Files\Windows Sidebar\sidebar.exe
C:\Program Files\TOSHIBA\TOSCDSPD\TOSCDSPD.exe
C:\Windows\ehome\ehtray.exe
C:\Program Files\Spybot - Search & Destroy\TeaTimer.exe
C:\Program Files\Druide\Antidote\Gestionnaire Antidote.exe
C:\Program Files\Windows Live\Messenger\msnmsgr.exe
C:\Program Files\Logitech\SetPoint\SetPoint.exe
C:\Program Files\Synaptics\SynTP\SynToshiba.exe
C:\Program Files\Common Files\Logishrd\KHAL2\KHALMNPR.EXE
C:\Windows\ehome\ehmsas.exe
C:\Program Files\TOSHIBA\ConfigFree\CFSwMgr.exe
C:\Program Files\Protector Suite QL\psqltray.exe
C:\Program Files\Synaptics\SynTP\SynTPHelper.exe
C:\Program Files\Microsoft Office\Office12\WINWORD.EXE
C:\Program Files\Microsoft\Office Live\OfficeLiveSignIn.exe
C:\Program Files\Trend Micro\HijackThis\HijackThis.exe

R0 - HKCU\Software\Microsoft\Internet Explorer\Main,Start Page = AOL.ca - Canada's Breaking News, Entertainment, Music, Life & Style and Email
R1 - HKLM\Software\Microsoft\Internet Explorer\Main,Default_Page_URL = Hotmail, News, Sport, Music, Movies, Money, Cars, Shopping, Windows Live from MSN UK
R1 - HKLM\Software\Microsoft\Internet Explorer\Main,Default_Search_URL = Bing
R1 - HKLM\Software\Microsoft\Internet Explorer\Main,Search Page = Bing
R0 - HKLM\Software\Microsoft\Internet Explorer\Main,Start Page = Hotmail, News, Sport, Music, Movies, Money, Cars, Shopping, Windows Live from MSN UK
R0 - HKCU\Software\Microsoft\Internet Explorer\Main,Local Page =
R0 - HKLM\Software\Microsoft\Internet Explorer\Main,Local Page =
R0 - HKCU\Software\Microsoft\Internet Explorer\Toolbar,LinksFolderName =
R3 - URLSearchHook: Yahoo! Toolbar - {EF99BD32-C1FB-11D2-892F-0090271D4F88} - C:\Program Files\Yahoo!\Companion\Installs\cpn\yt.dll
O1 - Hosts: ::1 localhost
O2 - BHO: &Yahoo! Toolbar Helper - {02478D38-C3F9-4efb-9B51-7695ECA05670} - C:\Program Files\Yahoo!\Companion\Installs\cpn\yt.dll
O2 - BHO: Adobe PDF Reader Link Helper - {06849E9F-C8D7-4D59-B87D-784B7D6BE0B3} - C:\Program Files\Common Files\Adobe\Acrobat\ActiveX\AcroIEHelper.dll
O2 - BHO: BitComet ClickCapture - {39F7E362-828A-4B5A-BCAF-5B79BFDFEA60} - C:\Program Files\BitComet\tools\BitCometBHO_1.3.3.2.dll
O2 - BHO: Spybot-S&D IE Protection - {53707962-6F74-2D53-2644-206D7942484F} - C:\PROGRA~1\SPYBOT~1\SDHelper.dll
O2 - BHO: IEVkbdBHO - {59273AB4-E7D3-40F9-A1A8-6FA9CCA1862C} - C:\Program Files\Kaspersky Lab\Kaspersky Internet Security 2010\ievkbd.dll
O2 - BHO: Search Helper - {6EBF7485-159F-4bff-A14F-B9E3AAC4465B} - C:\Program Files\Microsoft\Search Enhancement Pack\Search Helper\SEPsearchhelperie.dll
O2 - BHO: Groove GFS Browser Helper - {72853161-30C5-4D22-B7F9-0BBC1D38A37E} - C:\Program Files\Microsoft Office\Office12\GrooveShellExtensions.dll
O2 - BHO: Windows Live ID Sign-in Helper - {9030D464-4C02-4ABF-8ECC-5164760863C6} - C:\Program Files\Common Files\Microsoft Shared\Windows Live\WindowsLiveLogin.dll
O2 - BHO: Java(tm) Plug-In 2 SSV Helper - {DBC80044-A445-435b-BC74-9C25C1C588A9} - C:\Program Files\Java\jre6\bin\jp2ssv.dll
O2 - BHO: Windows Live Toolbar Helper - {E15A8DC0-8516-42A1-81EA-DC94EC1ACF10} - C:\Program Files\Windows Live\Toolbar\wltcore.dll
O2 - BHO: link filter bho - {E33CF602-D945-461A-83F0-819F76A199F8} - C:\Program Files\Kaspersky Lab\Kaspersky Internet Security 2010\klwtbbho.dll
O3 - Toolbar: Yahoo! Toolbar - {EF99BD32-C1FB-11D2-892F-0090271D4F88} - C:\Program Files\Yahoo!\Companion\Installs\cpn\yt.dll
O3 - Toolbar: &Windows Live Toolbar - {21FA44EF-376D-4D53-9B0F-8A89D3229068} - C:\Program Files\Windows Live\Toolbar\wltcore.dll
O4 - HKLM\..\Run: [Windows Defender] %ProgramFiles%\Windows Defender\MSASCui.exe -hide
O4 - HKLM\..\Run: [RtHDVCpl] RtHDVCpl.exe
O4 - HKLM\..\Run: [NDSTray.exe] NDSTray.exe
O4 - HKLM\..\Run: [Camera Assistant Software] "C:\Program Files\Camera Assistant Software for Toshiba\traybar.exe"
O4 - HKLM\..\Run: [TPwrMain] %ProgramFiles%\TOSHIBA\Power Saver\TPwrMain.EXE
O4 - HKLM\..\Run: [HSON] %ProgramFiles%\TOSHIBA\TBS\HSON.exe
O4 - HKLM\..\Run: [00TCrdMain] %ProgramFiles%\TOSHIBA\FlashCards\TCrdMain.exe
O4 - HKLM\..\Run: [PSQLLauncher] "C:\Program Files\Protector Suite QL\launcher.exe" /startup
O4 - HKLM\..\Run: [LtMoh] C:\Program Files\ltmoh\Ltmoh.exe
O4 - HKLM\..\Run: [SynTPEnh] C:\Program Files\Synaptics\SynTP\SynTPEnh.exe
O4 - HKLM\..\Run: [Adobe Reader Speed Launcher] "C:\Program Files\Adobe\Reader 8.0\Reader\Reader_sl.exe"
O4 - HKLM\..\Run: [Skytel] Skytel.exe
O4 - HKLM\..\Run: [NvMediaCenter] RUNDLL32.EXE C:\Windows\system32\NvMcTray.dll,NvTaskbarInit
O4 - HKLM\..\Run: [Kernel and Hardware Abstraction Layer] KHALMNPR.EXE
O4 - HKLM\..\Run: [Adobe ARM] "C:\Program Files\Common Files\Adobe\ARM\1.0\AdobeARM.exe"
O4 - HKLM\..\Run: [AVP] "C:\Program Files\Kaspersky Lab\Kaspersky Internet Security 2010\avp.exe"
O4 - HKLM\..\Run: [SunJavaUpdateSched] "C:\Program Files\Java\jre6\bin\jusched.exe"
O4 - HKCU\..\Run: [Sidebar] C:\Program Files\Windows Sidebar\sidebar.exe /autoRun
O4 - HKCU\..\Run: [TOSCDSPD] C:\Program Files\TOSHIBA\TOSCDSPD\TOSCDSPD.exe
O4 - HKCU\..\Run: [ehTray.exe] C:\Windows\ehome\ehTray.exe
O4 - HKCU\..\Run: [SpybotSD TeaTimer] C:\Program Files\Spybot - Search & Destroy\TeaTimer.exe
O4 - HKCU\..\Run: [Gestionnaire Antidote.exe] C:\Program Files\Druide\Antidote\Gestionnaire Antidote.exe
O4 - HKCU\..\Run: [msnmsgr] "C:\Program Files\Windows Live\Messenger\msnmsgr.exe" /background
O4 - HKUS\S-1-5-18\..\Run: [LtMoh] C:\Program Files\ltmoh\Ltmoh.exe (User 'SYSTEM')
O4 - HKUS\.DEFAULT\..\Run: [LtMoh] C:\Program Files\ltmoh\Ltmoh.exe (User 'Default user')
O4 - Global Startup: Logitech SetPoint.lnk = C:\Program Files\Logitech\SetPoint\SetPoint.exe
O8 - Extra context menu item: &D&ownload &with BitComet - res://C:\Program Files\BitComet\BitComet.exe/AddLink.htm
O8 - Extra context menu item: &D&ownload all video with BitComet - res://C:\Program Files\BitComet\BitComet.exe/AddVideo.htm
O8 - Extra context menu item: &D&ownload all with BitComet - res://C:\Program Files\BitComet\BitComet.exe/AddAllLink.htm
O8 - Extra context menu item: Add to Anti-Banner - C:\Program Files\Kaspersky Lab\Kaspersky Internet Security 2010\ie_banner_deny.htm
O8 - Extra context menu item: E&xport to Microsoft Excel - res://C:\PROGRA~1\MICROS~2\Office12\EXCEL.EXE/3000
O9 - Extra button: Ajout Direct - {219C3416-8CB2-491a-A3C7-D9FCDDC9D600} - C:\Program Files\Windows Live\Writer\WriterBrowserExtension.dll
O9 - Extra 'Tools' menuitem: &Ajout Direct dans Windows Live Writer - {219C3416-8CB2-491a-A3C7-D9FCDDC9D600} - C:\Program Files\Windows Live\Writer\WriterBrowserExtension.dll
O9 - Extra button: Envoyer à OneNote - {2670000A-7350-4f3c-8081-5663EE0C6C49} - C:\PROGRA~1\MICROS~2\Office12\ONBttnIE.dll
O9 - Extra 'Tools' menuitem: &Envoyer à OneNote - {2670000A-7350-4f3c-8081-5663EE0C6C49} - C:\PROGRA~1\MICROS~2\Office12\ONBttnIE.dll
O9 - Extra button: &Virtual keyboard - {4248FE82-7FCB-46AC-B270-339F08212110} - C:\Program Files\Kaspersky Lab\Kaspersky Internet Security 2010\klwtbbho.dll
O9 - Extra button: Research - {92780B25-18CC-41C8-B9BE-3C9C571A8263} - C:\PROGRA~1\MICROS~2\Office12\REFIEBAR.DLL
O9 - Extra button: URLs c&heck - {CCF151D8-D089-449F-A5A4-D9909053F20F} - C:\Program Files\Kaspersky Lab\Kaspersky Internet Security 2010\klwtbbho.dll
O9 - Extra button: BitComet - {D18A0B52-D63C-4ed0-AFC6-C1E3DC1AF43A} - res://C:\Program Files\BitComet\tools\BitCometBHO_1.3.3.2.dll/206 (file missing)
O9 - Extra button: (no name) - {DFB852A3-47F8-48C4-A200-58CAB36FD2A2} - C:\PROGRA~1\SPYBOT~1\SDHelper.dll
O9 - Extra 'Tools' menuitem: Spybot - Search & Destroy Configuration - {DFB852A3-47F8-48C4-A200-58CAB36FD2A2} - C:\PROGRA~1\SPYBOT~1\SDHelper.dll
O16 - DPF: {D27CDB6E-AE6D-11CF-96B8-444553540000} (Shockwave Flash Object) - http://fpdownload2.macromedia.com/ge...sh/swflash.cab
O18 - Protocol: grooveLocalGWS - {88FED34C-F0CA-4636-A375-3CB6248B04CD} - C:\Program Files\Microsoft Office\Office12\GrooveSystemServices.dll
O20 - AppInit_DLLs: C:\PROGRA~1\KASPER~1\KASPER~1\mzvkbd3.dll,C:\PROGR A~1\KASPER~1\KASPER~1\kloehk.dll
O23 - Service: Agere Modem Call Progress Audio (AgereModemAudio) - Agere Systems - C:\Windows\system32\agrsmsvc.exe
O23 - Service: Kaspersky Internet Security (AVP) - Kaspersky Lab - C:\Program Files\Kaspersky Lab\Kaspersky Internet Security 2010\avp.exe
O23 - Service: ConfigFree Service (CFSvcs) - TOSHIBA CORPORATION - C:\Program Files\TOSHIBA\ConfigFree\CFSvcs.exe
O23 - Service: Intel(R) PROSet/Wireless Event Log (EvtEng) - Intel Corporation - C:\Program Files\Intel\Wireless\Bin\EvtEng.exe
O23 - Service: Logitech Bluetooth Service (LBTServ) - Logitech, Inc. - C:\Program Files\Common Files\Logitech\Bluetooth\LBTServ.exe
O23 - Service: NVIDIA Display Driver Service (nvsvc) - NVIDIA Corporation - C:\Windows\system32\nvvsvc.exe
O23 - Service: Intel(R) PROSet/Wireless Registry Service (RegSrvc) - Intel Corporation - C:\Program Files\Intel\Wireless\Bin\RegSrvc.exe
O23 - Service: SBSD Security Center Service (SBSDWSCService) - Safer Networking Ltd. - C:\Program Files\Spybot - Search & Destroy\SDWinSec.exe
O23 - Service: TOSHIBA Navi Support Service (TNaviSrv) - TOSHIBA Corporation - C:\Program Files\TOSHIBA\TOSHIBA DVD PLAYER\TNaviSrv.exe
O23 - Service: TOSHIBA Optical Disc Drive Service (TODDSrv) - TOSHIBA Corporation - C:\Windows\system32\TODDSrv.exe
O23 - Service: TOSHIBA Power Saver (TosCoSrv) - TOSHIBA Corporation - C:\Program Files\TOSHIBA\Power Saver\TosCoSrv.exe
O23 - Service: TOSHIBA Bluetooth Service - TOSHIBA CORPORATION - C:\Program Files\Toshiba\Bluetooth Toshiba Stack\TosBtSrv.exe
O23 - Service: Ulead Burning Helper (UleadBurningHelper) - Ulead Systems, Inc. - C:\Program Files\Common Files\Ulead Systems\DVD\ULCDRSvr.exe

--
End of file - 10556 bytes

Unfortunately, the log is clean, as it was before...