SVP analyse log hijack This

Bonjour,

Mon PC est devenu extrèmement lent, avec soit f-secure à 98/100%, explorer.exe idem et qui parfois ne décolle plus de 100%.
Je poste ma config matériel et mon log hijack This, merci d'avance pour une aide providentielle et bienvenue ! :
Ordinateur:
DirectX 4.09.00.0904 (DirectX 9.0c)
Service Pack du système Service Pack 3
Système d'exploitation Microsoft Windows XP Home Edition

Carte mère:
Nom de la carte mère Asus A7V333-X (6 PCI, 1 AGP, 3 DDR DIMM)
Type de processeur AMD Athlon XP, 1800 MHz (13.5 x 133) 2200+
Chipset de la carte mère VIA VT8377 Apollo KT400
Mémoire système 1280 Mo (DDR SDRAM)
Type de BIOS Award Modular (10/09/02)
Port de communication Port de communication (COM1)
Port de communication Port de communication (COM2)
Port de communication Port imprimante ECP (LPT1)

Moniteur:
Carte vidéo Radeon X1650 Series Secondary (512 Mo)
Carte vidéo Radeon X1650 Series (512 Mo)
Moniteur Maxdata Belinea 10 60 75 [19" CRT] (12482353)

Multimédia:
Carte audio VIA AC'97 Enhanced Audio Controller

Partitions:
C: (NTFS) 20002 Mo (4259 Mo libre)
F: (NTFS) 38632 Mo (31988 Mo libre)
Taille totale 57.3 Go (35.4 Go libre)

LOG HIJACK THIS :
Logfile of Trend Micro HijackThis v2.0.2
Scan saved at 22:21:31, on 07/11/2010
Platform: Windows XP SP3 (WinNT 5.01.2600)
MSIE: Internet Explorer v8.00 (8.00.6001.18702)
Boot mode: Normal

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\Ati2evxx.exe
C:\WINDOWS\system32\svchost.exe
C:\WINDOWS\System32\svchost.exe
C:\WINDOWS\system32\svchost.exe
C:\WINDOWS\system32\Ati2evxx.exe
C:\Program Files\Fichiers communs\Symantec Shared\CCPD-LC\symlcsvc.exe
C:\WINDOWS\system32\spoolsv.exe
C:\WINDOWS\Explorer.EXE
C:\PROGRA~1\F-Secure\BackWeb\7681197\Program\SERVIC~1.EXE
C:\WINDOWS\System32\drivers\CDAC11BA.EXE
C:\Program Files\Diskeeper Corporation\Diskeeper\DkService.exe
C:\Program Files\F-Secure\Anti-Virus\fsgk32st.exe
C:\Program Files\F-Secure\Anti-Virus\FSGK32.EXE
C:\Program Files\F-Secure\Anti-Virus\fssm32.exe
C:\Program Files\F-Secure\BackWeb\7681197\program\fsbwsys.exe
C:\Program Files\F-Secure\Common\FSMA32.EXE
C:\Program Files\F-Secure\Common\FSMB32.EXE
C:\Program Files\F-Secure\Common\FSM32.EXE
C:\Program Files\F-Secure\Common\FCH32.EXE
C:\Program Files\F-Secure\BackWeb\7681197\Program\F-Secure Automatic Update.exe
C:\Program Files\Java\jre6\bin\jqs.exe
C:\Program Files\QuickTime\qttask.exe
C:\WINDOWS\system32\ctfmon.exe
C:\Program Files\Google\GoogleToolbarNotifier\GoogleToolbarNotifier.exe
F:\Program Files\spybot_search_and_destroy\Spybot - Search & Destroy\TeaTimer.exe
C:\Program Files\F-Secure\Common\FAMEH32.EXE
C:\Program Files\F-Secure\Anti-Virus\fsqh.exe
C:\Program Files\F-Secure\Anti-Virus\fsrw.exe
C:\WINDOWS\System32\svchost.exe
C:\WINDOWS\system32\taskmgr.exe
C:\Program Files\F-Secure\Anti-Virus\fsav32.exe
C:\Program Files\F-Secure\Common\FNRB32.EXE
C:\Program Files\F-Secure\FWES\Program\fsdfwd.exe
C:\Program Files\F-Secure\Common\FIH32.EXE
C:\Program Files\F-Secure\FSGUI\fsguidll.exe
C:\Program Files\Internet Explorer\iexplore.exe
C:\Program Files\Internet Explorer\iexplore.exe
C:\Program Files\Internet Explorer\iexplore.exe
C:\Program Files\Trend Micro\HijackThis\HijackThis.exe

R0 - HKCU\Software\Microsoft\Internet Explorer\Main,Start Page = http://www.naturestore.fr/
R1 - HKLM\Software\Microsoft\Internet Explorer\Main,Default_Page_URL = https://www.free.fr/freebox/index.html
R0 - HKCU\Software\Microsoft\Internet Explorer\Toolbar,LinksFolderName = Liens
O2 - BHO: (no name) - {02478D38-C3F9-4efb-9B51-7695ECA05670} - (no file)
O2 - BHO: AcroIEHlprObj Class - {06849E9F-C8D7-4D59-B87D-784B7D6BE0B3} - C:\Program Files\Adobe\Acrobat 5.0\Reader\ActiveX\AcroIEHelper.ocx
O2 - BHO: Spybot-S&D IE Protection - {53707962-6F74-2D53-2644-206D7942484F} - F:\PROGRA~2\SPYBOT~1\SPYBOT~1\SDHelper.dll
O2 - BHO: Java(tm) Plug-In SSV Helper - {761497BB-D6F0-462C-B6EB-D4DAF1D92D43} - C:\Program Files\Java\jre6\bin\ssv.dll
O2 - BHO: Google Toolbar Helper - {AA58ED58-01DD-4d91-8333-CF10577473F7} - C:\Program Files\Google\Google Toolbar\GoogleToolbar_32.dll
O2 - BHO: Google Toolbar Notifier BHO - {AF69DE43-7D58-4638-B6FA-CE66B5AD205D} - C:\Program Files\Google\GoogleToolbarNotifier\5.6.5805.1910\swg.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: JQSIEStartDetectorImpl - {E7E6F031-17CE-4C07-BC86-EABFE594F69C} - C:\Program Files\Java\jre6\lib\deploy\jqs\ie\jqs_plugin.dll
O3 - Toolbar: (no name) - {ACB1E670-3217-45C4-A021-6B829A8A27CB} - (no file)
O3 - Toolbar: Google Toolbar - {2318C2B1-4965-11d4-9B18-009027A5CD4F} - C:\Program Files\Google\Google Toolbar\GoogleToolbar_32.dll
O4 - HKLM\..\Run: [DiskeeperSystray] "C:\Program Files\Diskeeper Corporation\Diskeeper\DkIcon.exe"
O4 - HKLM\..\Run: [F-Secure Manager] "C:\Program Files\F-Secure\Common\FSM32.EXE" /splash
O4 - HKLM\..\Run: [F-Secure TNB] "C:\Program Files\F-Secure\TNB\TNBUtil.exe" /CHECKALL /WAITFORSW
O4 - HKLM\..\Run: [QuickTime Task] "C:\Program Files\QuickTime\qttask.exe" -atboottime
O4 - HKCU\..\Run: [ctfmon.exe] C:\WINDOWS\system32\ctfmon.exe
O4 - HKCU\..\Run: [swg] "C:\Program Files\Google\GoogleToolbarNotifier\GoogleToolbarNotifier.exe"
O4 - HKCU\..\Run: [SpybotSD TeaTimer] F:\Program Files\spybot_search_and_destroy\Spybot - Search & Destroy\TeaTimer.exe
O4 - HKUS\S-1-5-19\..\Run: [CTFMON.EXE] C:\WINDOWS\System32\CTFMON.EXE (User 'SERVICE LOCAL')
O4 - HKUS\S-1-5-20\..\Run: [CTFMON.EXE] C:\WINDOWS\System32\CTFMON.EXE (User 'SERVICE RÉSEAU')
O4 - HKUS\S-1-5-18\..\Run: [CTFMON.EXE] C:\WINDOWS\System32\CTFMON.EXE (User 'SYSTEM')
O4 - HKUS\.DEFAULT\..\Run: [CTFMON.EXE] C:\WINDOWS\System32\CTFMON.EXE (User 'Default user')
O4 - Global Startup: F-Secure Automatic Update.lnk = C:\Program Files\F-Secure\BackWeb\7681197\program\F-Secure Automatic Update.exe
O8 - Extra context menu item: &Add animation to IncrediMail Style Box - C:\PROGRA~1\INCRED~1\bin\resources\WebMenuImg.htm
O8 - Extra context menu item: &Block this popup - C:\Program Files\F-Secure\Anti-Spyware\blockpopups.htm
O8 - Extra context menu item: Google Sidewiki... - res://C:\Program Files\Google\Google Toolbar\Component\GoogleToolbarDynamic_mui_en_950DF09FAB501E03.dll/cmsidewiki.html
O9 - Extra button: IE Shield - {300DB664-75B5-47c0-8B45-A44ACCF73C00} - C:\Program Files\F-Secure\Anti-Spyware\ieshield.dll
O9 - Extra 'Tools' menuitem: IE Shield... - {300DB664-75B5-47c0-8B45-A44ACCF73C00} - C:\Program Files\F-Secure\Anti-Spyware\ieshield.dll
O9 - Extra button: (no name) - {DFB852A3-47F8-48C4-A200-58CAB36FD2A2} - F:\PROGRA~2\SPYBOT~1\SPYBOT~1\SDHelper.dll
O9 - Extra 'Tools' menuitem: Spybot - Search & Destroy Configuration - {DFB852A3-47F8-48C4-A200-58CAB36FD2A2} - F:\PROGRA~2\SPYBOT~1\SPYBOT~1\SDHelper.dll
O9 - Extra button: (no name) - {e2e2dd38-d088-4134-82b7-f2ba38496583} - C:\WINDOWS\Network Diagnostic\xpnetdiag.exe
O9 - Extra 'Tools' menuitem: @xpsp3res.dll,-20001 - {e2e2dd38-d088-4134-82b7-f2ba38496583} - C:\WINDOWS\Network Diagnostic\xpnetdiag.exe
O9 - Extra button: Messenger - {FB5F1910-F110-11d2-BB9E-00C04F795683} - C:\Program Files\Messenger\msmsgs.exe (file missing)
O9 - Extra 'Tools' menuitem: Windows Messenger - {FB5F1910-F110-11d2-BB9E-00C04F795683} - C:\Program Files\Messenger\msmsgs.exe (file missing)
O14 - IERESET.INF: START_PAGE_URL=https://www.free.fr/freebox/index.html
O16 - DPF: Garmin Communicator Plug-In - https://static.garmincdn.com/gcp/ie/2.9.2.0/GarminAxControl.CAB
O16 - DPF: {01347765-1965-426B-91A4-AA6BB342B9A3} (InstallerObj Class) - http://www.1-click.com/common/files/installer-hidden-test.cab
O16 - DPF: {0246ECA8-996F-11D1-BE2F-00A0C9037DFE} (TDServer Control) - http://fr.encyclopedia.yahoo.com/rsc/tdserver.cab
O16 - DPF: {0CCA191D-13A6-4E29-B746-314DEE697D83} (Facebook Photo Uploader 5 Control) - http://upload.facebook.com/controls/2008.10.10_v5.5.8/FacebookPhotoUploader5.cab
O16 - DPF: {1E54D648-B804-468d-BC78-4AFFED8E262E} (System Requirements Lab) - https://www.systemrequirementslab.com/cyri
O16 - DPF: {2A3DFC59-8A87-49A1-85D1-42903410911F} - http://scripts.dlv4.com/binaries/egaccess4/egaccess4_1058_XP.cab
O16 - DPF: {48DD0448-9209-4F81-9F6D-D83562940134} (MySpace Uploader Control) - http://lads.myspace.com/upload/MySpaceUploader1006.cab
O16 - DPF: {56336BCB-3D8A-11D6-A00B-0050DA18DE71} - http://207.188.7.150/03312754df0e2f548b18/netzip/RdxIE601_fr.cab
O16 - DPF: {5D637FAD-E202-48D1-8F18-5B9C459BD1E3} (Image Uploader Control) - http://www.extrafilm.fr/ImageUploader5.cab
O16 - DPF: {74D05D43-3236-11D4-BDCD-00C04F9A3B61} (HouseCall Control) - https://www.trendmicro.com/en_us/forHome/products/housecall.html
O16 - DPF: {87AF076E-D86D-4E87-ADDD-F05804E1F150} - https://www.virginmega.fr/DownloadManager/Release/Prod/DownMan.cab
O16 - DPF: {917623D1-D8E5-11D2-BE8B-00104B06BDE3} (CamImage Class) - http://212.157.152.82/AxisCamControl.ocx
O16 - DPF: {B60CEFE7-2DD0-4B78-951A-509D951DB1F0} (ExtraFilm Uploader Control) - http://www.extrafilm.fr/ExtraFilmUploader6.cab
O16 - DPF: {C1FDEE68-98D5-4F42-A4DD-D0BECF5077EB} (EPUImageControl Class) - http://tools.ebayimg.com/eps/wl/activex/eBay_Enhanced_Picture_Control_v1-0-27-0.cab
O16 - DPF: {C2FCEF52-ACE9-11D3-BEBD-00105AA9B6AE} (Symantec RuFSI Registry Information Class) - http://security.symantec.com/SSC/SharedContent/common/bin/cabsa.cab
O16 - DPF: {C3F79A2B-B9B4-4A66-B012-3EE46475B072} (MessengerStatsClient Class) - http://messenger.zone.msn.com/binary/MessengerStatsPAClient.cab56907.cab
O16 - DPF: {CC05BC12-2AA2-4AC7-AC81-0E40F83B1ADF} (Live365Player Class) - https://live365.com/
O16 - DPF: {F00F4763-7355-4725-82F7-0DA94A256D46} (IMDownloader Class) - http://www2.incredimail.com/contents/setup/downloader/imloader.cab
O16 - DPF: {F2A84794-EE6D-447B-8C21-3BA1DC77C5B4} (SDKInstall Class) - http://activex.microsoft.com/activex/controls/sdkupdate/sdkinst.cab
O23 - Service: Ati HotKey Poller - ATI Technologies Inc. - C:\WINDOWS\system32\Ati2evxx.exe
O23 - Service: ATI Smart - Unknown owner - C:\WINDOWS\system32\ati2sgag.exe
O23 - Service: F-Secure Automatic Update (BackWeb Plug-in - 7681197) - F-Secure Automatic Update - C:\PROGRA~1\F-Secure\BackWeb\7681197\Program\SERVIC~1.EXE
O23 - Service: C-DillaCdaC11BA - Macrovision - C:\WINDOWS\System32\drivers\CDAC11BA.EXE
O23 - Service: Diskeeper - Diskeeper Corporation - C:\Program Files\Diskeeper Corporation\Diskeeper\DkService.exe
O23 - Service: FSGKHS (F-Secure Gatekeeper Handler Starter) - F-Secure Corp. - C:\Program Files\F-Secure\Anti-Virus\fsgk32st.exe
O23 - Service: F-Secure Network Request Broker - F-Secure Corporation - C:\Program Files\F-Secure\Common\FNRB32.EXE
O23 - Service: fsbwsys - F-Secure Corp. - C:\Program Files\F-Secure\BackWeb\7681197\program\fsbwsys.exe
O23 - Service: F-Secure Anti-Virus Firewall Daemon (FSDFWD) - F-Secure Corporation - C:\Program Files\F-Secure\FWES\Program\fsdfwd.exe
O23 - Service: F-Secure Management Agent (FSMA) - F-Secure Corporation - C:\Program Files\F-Secure\Common\FSMA32.EXE
O23 - Service: Google Update Service (gupdate1c9a425caa2e2ac) (gupdate1c9a425caa2e2ac) - Google Inc. - C:\Program Files\Google\Update\GoogleUpdate.exe
O23 - Service: Google Software Updater (gusvc) - Google - C:\Program Files\Google\Common\Google Updater\GoogleUpdaterService.exe
O23 - Service: InstallDriver Table Manager (IDriverT) - Macrovision Corporation - C:\Program Files\Fichiers communs\InstallShield\Driver\11\Intel 32\IDriverT.exe
O23 - Service: Java Quick Starter (JavaQuickStarterService) - Sun Microsystems, Inc. - C:\Program Files\Java\jre6\bin\jqs.exe
O23 - Service: nProtect GameGuard Service (npggsvc) - Unknown owner - C:\WINDOWS\system32\GameMon.des.exe (file missing)
O23 - Service: Planificateur LiveUpdate automatique - Unknown owner - C:\Program Files\Symantec\LiveUpdate\ALUSchedulerSvc.exe (file missing)
O23 - Service: Symantec Core LC - Symantec Corporation - C:\Program Files\Fichiers communs\Symantec Shared\CCPD-LC\symlcsvc.exe
O24 - Desktop Component 0: (no name) - http://multimedia.fnac.com/...