Ralentissement, aide popur hisjackthis

Bonjour, je sais qu'on vous pose sollicit toujours pour les mm pb mais je n'arrive pas à me passer d'aide...
De trés nombreux ralentissements, plusieurs minutes aprés le démarrage pour lancer une application, pas de virus detectés par secuser !!!
voivi ma config xdiag (je sais il me manque un peu de ram mais ts mes ports sont pris, et puis il y a qq temps avec la mm config pas de blem ...) :
9/1/2006, 19:31:16
Machine name:
Operating System: Microsoft Windows XP Professionnel (5.1, Build 2600) (2600.xpclient.010817-1148)
Language: French (Regional Setting: French)
System Manufacturer: Compaq
System Model: DSDT
BIOS: COMPAQ - 20010829
Processor: Intel(R) Pentium(R) 4 CPU 1.50GHz
Memory: 384MB RAM
Page File: 388MB used, 534MB available
Primary File System: n/a
DirectX Version: DirectX 8.1 (4.08.01.0810)
DX Setup Parameters: Not found
DxDiag Version: 5.01.2600.0000 32bit Unicode

------------
DxDiag Notes
------------
DirectX Files Tab: The file qasf.dll is an old version, which could cause problems.
Display Tab 1: No problems found.
Sound Tab 1: No problems found.
Music Tab: No problems found.
Input Tab: No input devices detected.
No problems found.
Network Tab: No problems found.

j'ai aussi ft un hisjackthis :

ogfile of HijackThis v1.99.1
Scan saved at 19:30:02, on 01/09/2006
Platform: Windows XP (WinNT 5.01.2600)
MSIE: Internet Explorer v6.00 (6.00.2600.0000)

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\Explorer.EXE
C:\WINDOWS\system32\spoolsv.exe
C:\Program Files\Java\jre1.5.0_06\bin\jusched.exe
C:\Program Files\Labtec\Desktop\V5.1\moffice.exe
C:\Program Files\Labtec\Desktop\V5.1\kbdap32a.exe
C:\Program Files\eBay\eBay Toolbar2\eBayTBDaemon.exe
C:\Program Files\WinAntiVirus Pro 2006\winav.exe
C:\Program Files\Labtec\Desktop\V5.1\MOUSE32A.EXE
C:\WINDOWS\System32\ctfmon.exe
C:\Program Files\MSN Messenger\MsnMsgr.Exe
C:\Program Files\WinAntiVirus Pro 2006\FWSvc.exe
C:\WINDOWS\System32\svchost.exe
C:\WINDOWS\System32\svchost.exe
C:\WINDOWS\System32\wuauclt.exe
C:\Program Files\Internet Explorer\iexplore.exe
C:\Documents and Settings\symaja\Local Settings\Temporary Internet Files\Content.IE5\GHIJCHMN\HijackThis[1].exe
C:\téléchargement\HijackThis.exe

R0 - HKCU\Software\Microsoft\Internet Explorer\Main,Start Page = http://runonce.msn.com/?v=msgrv75
R0 - HKLM\Software\Microsoft\Internet Explorer\Main,Start Page = https://fr.yahoo.com/
R1 - HKCU\Software\Microsoft\Internet Explorer\SearchURL,(Default) = http://fr.rd.yahoo.com/customize/ycomp/defaults/su/*https://fr.yahoo.com/
R0 - HKCU\Software\Microsoft\Internet Explorer\Toolbar,LinksFolderName = Liens
R3 - URLSearchHook: Yahoo! Toolbar - {EF99BD32-C1FB-11D2-892F-0090271D4F88} - C:\Program Files\Yahoo!\Companion\Installs\cpn\yt.dll
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\Adobe\Acrobat 7.0\ActiveX\AcroIEHelper.dll
O2 - BHO: CIEIntegrator Object - {2178F3FB-2560-458F-BDEE-631E2FE0DFE4} - C:\Program Files\WinAntiVirus Pro 2006\winpgi.dll
O2 - BHO: eBay Toolbar Helper - {22D8E815-4A5E-4DFB-845E-AAB64207F5BD} - C:\Program Files\eBay\eBay Toolbar2\eBayTB.dll
O2 - BHO: SSVHelper Class - {761497BB-D6F0-462C-B6EB-D4DAF1D92D43} - C:\Program Files\Java\jre1.5.0_06\bin\ssv.dll
O2 - BHO: Windows Live Sign-in Helper - {9030D464-4C02-4ABF-8ECC-5164760863C6} - C:\Program Files\Fichiers communs\Microsoft Shared\Windows Live\WindowsLiveLogin.dll
O3 - Toolbar: Yahoo! Toolbar - {EF99BD32-C1FB-11D2-892F-0090271D4F88} - C:\Program Files\Yahoo!\Companion\Installs\cpn\yt.dll
O3 - Toolbar: &Radio - {8E718888-423F-11D2-876E-00A0C9082467} - C:\WINDOWS\System32\msdxm.ocx
O3 - Toolbar: eBay Toolbar - {92085AD4-F48A-450D-BD93-B28CC7DF67CE} - C:\Program Files\eBay\eBay Toolbar2\eBayTB.dll
O4 - HKLM\..\Run: [SunJavaUpdateSched] C:\Program Files\Java\jre1.5.0_06\bin\jusched.exe
O4 - HKLM\..\Run: [FLMOFFICE4DMOUSE] C:\Program Files\Labtec\Desktop\V5.1\moffice.exe
O4 - HKLM\..\Run: [OFFICEKB] C:\Program Files\Labtec\Desktop\V5.1\kbdap32a.exe
O4 - HKLM\..\Run: [eBayToolbar] C:\Program Files\eBay\eBay Toolbar2\eBayTBDaemon.exe
O4 - HKLM\..\Run: [WinAntiVirusPro2006] C:\Program Files\WinAntiVirus Pro 2006\winav.exe /min
O4 - HKLM\..\Run: [KernelFaultCheck] %systemroot%\system32\dumprep 0 -k
O4 - HKCU\..\Run: [CTFMON.EXE] C:\WINDOWS\System32\ctfmon.exe
O4 - HKCU\..\Run: [MsnMsgr] "C:\Program Files\MSN Messenger\MsnMsgr.Exe" /background
O4 - Global Startup: Lancement rapide d'Adobe Reader.lnk = C:\Program Files\Adobe\Acrobat 7.0\Reader\reader_sl.exe
O4 - Global Startup: Microsoft Office.lnk = C:\Program Files\Microsoft Office\Office10\OSA.EXE
O8 - Extra context menu item: &eBay Search - res://C:\Program Files\eBay\eBay Toolbar2\eBayTb.dll/RCSearch.html
O8 - Extra context menu item: E&xporter vers Microsoft Excel - res://C:\PROGRA~1\MICROS~2\Office10\EXCEL.EXE/3000
O9 - Extra button: (no name) - {08B0E5C0-4FCB-11CF-AAA5-00401C608501} - C:\Program Files\Java\jre1.5.0_06\bin\ssv.dll
O9 - Extra 'Tools' menuitem: Console Java (Sun) - {08B0E5C0-4FCB-11CF-AAA5-00401C608501} - C:\Program Files\Java\jre1.5.0_06\bin\ssv.dll
O9 - Extra button: Related - {c95fe080-8f5d-11d2-a20b-00aa003c157a} - C:\WINDOWS\web\related.htm
O9 - Extra 'Tools' menuitem: Show &Related Links - {c95fe080-8f5d-11d2-a20b-00aa003c157a} - C:\WINDOWS\web\related.htm
O16 - DPF: {30528230-99F7-4BB4-88D8-FA1D4F56A2AB} (YInstStarter Class) - http://us.dl1.yimg.com/download.yahoo.com/dl/yinst/yinst_current.cab
O16 - DPF: {6414512B-B978-451D-A0D8-FCFDF33E833C} (WUWebControl Class) - http://update.microsoft.com/windowsupdate/v6/V5Controls/en/x86/client/wuweb_site....
O16 - DPF: {74D05D43-3236-11D4-BDCD-00C04F9A3B61} (HouseCall Control) - https://www.trendmicro.com/en_us/forHome/products/housecall.html
O16 - DPF: {A18962F6-E6ED-40B1-97C9-1FB36F38BFA8} (Aurigma Image Uploader 3.5 Control) - http://www.photoways.com/clients/ImageUploader3.cab
O18 - Protocol: livecall - {828030A1-22C1-4009-854F-8E305202313F} - C:\PROGRA~1\MSNMES~1\MSGRAP~1.DLL
O18 - Protocol: msnim - {828030A1-22C1-4009-854F-8E305202313F} - C:\PROGRA~1\MSNMES~1\MSGRAP~1.DLL
O23 - Service: Firewall service (FWSvc) - WinSoftware, Ltd. - C:\Program Files\WinAntiVirus Pro 2006\FWSvc.exe

Est ce que le direct x peut causeer ces ralentssements ???? mais les pb sont généraux pas seulement avec le net

Merci pour votre aide et vos réponse

Symaja, une jeune femme interessée mais novice ;-)