Ralentissement de mon PC et probleme firefox

Mon PC est trés lent, et firefox est toujours en utilisation même fermé, je suis obligée de terminer le processus dans gestionnaire des taches pour pouvoir ouvrir firefox
mon rapport hijackthis:
Logfile of Trend Micro HijackThis v2.0.2
Scan saved at 19:47:31, on 14/04/2009
Platform: Windows XP SP3 (WinNT 5.01.2600)
MSIE: Internet Explorer v6.00 SP3 (6.00.2900.5512)
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:\WINDOWS\Explorer.EXE
C:\WINDOWS\system32\spoolsv.exe
C:\Program Files\Avira\AntiVir PersonalEdition Classic\sched.exe
C:\Program Files\Avira\AntiVir PersonalEdition Classic\avguard.exe
C:\Program Files\Java\jre6\bin\jqs.exe
C:\WINDOWS\system32\svchost.exe
C:\WINDOWS\system32\SearchIndexer.exe
C:\windows\system\hpsysdrv.exe
C:\WINDOWS\system32\hphmon06.exe
C:\WINDOWS\system32\keyhook.exe
C:\WINDOWS\AGRSMMSG.exe
C:\Program Files\ATI Technologies\ATI Control Panel\atiptaxx.exe
C:\HP\KBD\KBD.EXE
C:\Program Files\Avira\AntiVir PersonalEdition Classic\avgnt.exe
C:\Program Files\Java\jre6\bin\jusched.exe
C:\Program Files\SpywareGuard\sgmain.exe
C:\Program Files\SpywareGuard\sgbhp.exe
C:\Program Files\PC Connectivity Solution\ServiceLayer.exe
C:\Program Files\PC Connectivity Solution\Transports\NclMSBTSrv.exe
C:\Program Files\PC Connectivity Solution\Transports\NclUSBSrv.exe
C:\Program Files\PC Connectivity Solution\Transports\NclRSSrv.exe
C:\Program Files\eMule\emule.exe
C:\Program Files\Mozilla Firefox\firefox.exe
C:\Program Files\CCleaner\CCleaner.exe
C:\WINDOWS\system32\wuauclt.exe
C:\Documents and Settings\HP_Propriétaire\Mes documents\Mes téléchargements\HiJackThis.exe

R1 - HKCU\Software\Microsoft\Internet Explorer\Main,Default_Page_URL = http://ie.redirect.hp.com/svs/rdr? [...] pf=desktop
R1 - HKCU\Software\Microsoft\Internet Explorer\Main,Default_Search_URL = http://ie.redirect.hp.com/svs/rdr? [...] pf=desktop
R1 - HKCU\Software\Microsoft\Internet Explorer\Main,Search Bar = http://search.msn.fr/spbasic.htm
R1 - HKCU\Software\Microsoft\Internet Explorer\Main,Search Page = http://ie.redirect.hp.com/svs/rdr? [...] pf=desktop
R0 - HKCU\Software\Microsoft\Internet Explorer\Main,Start Page = http://www.google.fr/ig?hl=fr&t=0
R1 - HKLM\Software\Microsoft\Internet Explorer\Main,Default_Page_URL = http://ie.redirect.hp.com/svs/rdr? [...] pf=desktop
R1 - HKLM\Software\Microsoft\Internet Explorer\Main,Default_Search_URL = http://ie.redirect.hp.com/svs/rdr? [...] pf=desktop
R1 - HKLM\Software\Microsoft\Internet Explorer\Main,Search Bar = http://ie.redirect.hp.com/svs/rdr? [...] pf=desktop
R1 - HKLM\Software\Microsoft\Internet Explorer\Main,Search Page = http://ie.redirect.hp.com/svs/rdr? [...] pf=desktop
R0 - HKLM\Software\Microsoft\Internet Explorer\Main,Start Page = http://ie.redirect.hp.com/svs/rdr? [...] pf=desktop
R0 - HKCU\Software\Microsoft\Internet Explorer\Toolbar,LinksFolderName = Liens
O2 - BHO: SpywareGuard Download Protection - {4A368E80-174F-4872-96B5-0B27DDD11DB2} - C:\Program Files\SpywareGuard\dlprotect.dll
O2 - BHO: Programme d'aide de l'Assistant de connexion Windows Live - {9030D464-4C02-4ABF-8ECC-5164760863C6} - C:\Program Files\Fichiers communs\Microsoft Shared\Windows Live\WindowsLiveLogin.dll
O3 - Toolbar: Vue HP - {B2847E28-5D7D-4DEB-8B67-05D28BCF79F5} - c:\Program Files\HP\Digital Imaging\bin\HPDTLK02.dll
O3 - Toolbar: PDFCreator Toolbar - {31CF9EBE-5755-4A1D-AC25-2834D952D9B4} - C:\Program Files\PDFCreator Toolbar\v3.3.0.1\PDFCreator_Toolbar.dll
O4 - HKLM\..\Run: [hpsysdrv] c:\windows\system\hpsysdrv.exe
O4 - HKLM\..\Run: [HPHUPD06] c:\Program Files\HP\{AAC4FC36-8F89-4587-8DD3-EBC57C83374D}\hphupd06.exe
O4 - HKLM\..\Run: [HPHmon06] C:\WINDOWS\system32\hphmon06.exe
O4 - HKLM\..\Run: [Recguard] C:\WINDOWS\SMINST\RECGUARD.EXE
O4 - HKLM\..\Run: [VTTimer] VTTimer.exe
O4 - HKLM\..\Run: [SiS Windows KeyHook] C:\WINDOWS\system32\keyhook.exe
O4 - HKLM\..\Run: [AGRSMMSG] AGRSMMSG.exe
O4 - HKLM\..\Run: [ATIPTA] C:\Program Files\ATI Technologies\ATI Control Panel\atiptaxx.exe
O4 - HKLM\..\Run: [HP Component Manager] "C:\Program Files\HP\hpcoretech\hpcmpmgr.exe"
O4 - HKLM\..\Run: [KBD] C:\HP\KBD\KBD.EXE
O4 - HKLM\..\Run: [DAEMON Tools] "C:\Program Files\DAEMON Tools\daemon.exe" -lang 1033
O4 - HKLM\..\Run: [NSLauncher] C:\Program Files\Nokia\Nokia Software Launcher\NSLauncher.exe /startup
O4 - HKLM\..\Run: [avgnt] "C:\Program Files\Avira\AntiVir PersonalEdition Classic\avgnt.exe" /min
O4 - HKLM\..\Run: [Adobe Reader Speed Launcher] "C:\Program Files\Adobe\Reader 8.0\Reader\Reader_sl.exe"
O4 - HKLM\..\Run: [SunJavaUpdateSched] "C:\Program Files\Java\jre6\bin\jusched.exe"
O4 - HKCU\..\Run: [PC Suite Tray] "C:\Program Files\Nokia\Nokia PC Suite 7\PCSuite.exe" -onlytray
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 - Startup: SpywareGuard.lnk = C:\Program Files\SpywareGuard\sgmain.exe
O8 - Extra context menu item: E&xporter vers Microsoft Excel - res://C:\PROGRA~1\MICROS~3\Office10\EXCEL.EXE/3000
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
O9 - Extra 'Tools' menuitem: Windows Messenger - {FB5F1910-F110-11d2-BB9E-00C04F795683} - C:\Program Files\Messenger\msmsgs.exe
O15 - Trusted Zone: http://www.secuser.com
O16 - DPF: {17492023-C23A-453E-A040-C7C580BBF700} (Windows Genuine Advantage Validation Tool) -
O16 - DPF: {4F1E5B1A-2A80-42CA-8532-2D05CB959537} (MSN Photo Upload Tool) - http://gfx1.hotmail.com/mail/w2/resources/MSNPUpld.cab
O16 - DPF: {6E5E167B-1566-4316-B27F-0DDAB3484CF7} -
O16 - DPF: {74D05D43-3236-11D4-BDCD-00C04F9A3B61} (HouseCall Control) - http://a840.g.akamai.net/7/840/537 [...] scan53.cab
O16 - DPF: {80DD2229-B8E4-4C77-B72F-F22972D723EA} -
O16 - DPF: {CAFEEFAC-0014-0002-0000-ABCDEFFEDCBA} (Java Plug-in 1.4.2) -
O16 - DPF: {CAFEEFAC-0015-0000-0004-ABCDEFFEDCBA} (Java Plug-in 1.5.0_04) -
O16 - DPF: {CAFEEFAC-0015-0000-0006-ABCDEFFEDCBA} (Java Plug-in 1.5.0_06) -
O16 - DPF: {CAFEEFAC-0016-0000-0002-ABCDEFFEDCBA} (Java Plug-in 1.6.0_02) -
O16 - DPF: {F58E1CEF-A068-4C15-BA5E-587CAF3EE8C6} -
O16 - DPF: {FB90BA05-66E6-4C56-BCD3-D65B0F7EBA39} -
O17 - HKLM\System\CCS\Services\Tcpip\..\{0293A9B3-B2BB-4ED0-84C6-896D038BF4B5}: NameServer = 212.27.53.252,212.27.54.252
O17 - HKLM\System\CS1\Services\Tcpip\..\{0293A9B3-B2BB-4ED0-84C6-896D038BF4B5}: NameServer = 212.27.53.252,212.27.54.252
O23 - Service: Avira AntiVir Personal - Free Antivirus Scheduler (AntiVirScheduler) - Avira GmbH - C:\Program Files\Avira\AntiVir PersonalEdition Classic\sched.exe
O23 - Service: Avira AntiVir Personal - Free Antivirus Guard (AntiVirService) - Avira GmbH - C:\Program Files\Avira\AntiVir PersonalEdition Classic\avguard.exe
O23 - Service: Ati HotKey Poller - Unknown owner - C:\WINDOWS\system32\Ati2evxx.exe
O23 - Service: Java Quick Starter (JavaQuickStarterService) - Sun Microsystems, Inc. - C:\Program Files\Java\jre6\bin\jqs.exe
O23 - Service: Pml Driver HPZ12 - HP - C:\WINDOWS\system32\HPZipm12.exe
O23 - Service: ServiceLayer - Nokia. - C:\Program Files\PC Connectivity Solution\ServiceLayer.exe

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