PC qui ram + utilisation anormal de la ram

Bonjour,
Depuis quelques jours mon PC anormalement, j'ai un scan complet par avast, aucune menace de trouver, j'ai aussi fait un rapport hijackthis:

Logfile of Trend Micro HijackThis v2.0.2
Scan saved at 15:35:42, on 07/01/2012
Platform: Unknown Windows (WinNT 6.01.3505 SP1)
MSIE: Internet Explorer v9.00 (9.00.8112.16421)
Boot mode: Normal

Running processes:
C:\Program Files (x86)\Windows Sidebar\sidebar.exe
C:\Program Files (x86)\Common Files\Apple\Internet Services\iCloudServices.exe
C:\Program Files (x86)\Common Files\Apple\Internet Services\ApplePhotoStreams.exe
C:\Program Files (x86)\uTorrent\uTorrent.exe
C:\Program Files (x86)\Cobian Backup 10\Cobian.exe
C:\Program Files (x86)\Glary Utilities\memdefrag.exe
C:\Windows\VPro520.exe
C:\Program Files\AVAST Software\Avast\AvastUI.exe
C:\Program Files (x86)\Moniteur neufbox\Moniteur neufbox.exe
C:\Program Files (x86)\Cobian Backup 10\cbInterface.exe
C:\Program Files (x86)\Common Files\Apple\Apple Application Support\APSDaemon.exe
C:\Users\Jimmy\AppData\Local\Google\Chrome\Application\chrome.exe
C:\Users\Jimmy\AppData\Local\Google\Chrome\Application\chrome.exe
C:\Users\Jimmy\AppData\Local\Google\Chrome\Application\chrome.exe
C:\Users\Jimmy\AppData\Local\Google\Chrome\Application\chrome.exe
C:\Users\Jimmy\AppData\Local\Google\Chrome\Application\chrome.exe
C:\Users\Jimmy\AppData\Local\Google\Chrome\Application\chrome.exe
C:\Users\Jimmy\AppData\Local\Google\Chrome\Application\chrome.exe
C:\Users\Jimmy\AppData\Local\Google\Chrome\Application\chrome.exe
C:\Users\Jimmy\AppData\Local\Google\Chrome\Application\chrome.exe
C:\Windows\SysWOW64\rundll32.exe
C:\Users\Jimmy\AppData\Local\Google\Chrome\Application\chrome.exe
C:\Users\Jimmy\Downloads\HiJackThis.exe
C:\Users\Jimmy\AppData\Local\Google\Chrome\Application\chrome.exe

R0 - HKCU\Software\Microsoft\Internet Explorer\Main,Start Page = http://search.hotspotshield.com/g/?c=h
R1 - HKLM\Software\Microsoft\Internet Explorer\Main,Default_Page_URL = http://go.microsoft.com/fwlink/?LinkId=69157
R1 - HKLM\Software\Microsoft\Internet Explorer\Main,Default_Search_URL = http://go.microsoft.com/fwlink/?LinkId=54896
R1 - HKLM\Software\Microsoft\Internet Explorer\Main,Search Page = http://go.microsoft.com/fwlink/?LinkId=54896
R0 - HKLM\Software\Microsoft\Internet Explorer\Main,Start Page = http://go.microsoft.com/fwlink/?LinkId=69157
R0 - HKLM\Software\Microsoft\Internet Explorer\Search,SearchAssistant =
R0 - HKLM\Software\Microsoft\Internet Explorer\Search,CustomizeSearch =
R0 - HKLM\Software\Microsoft\Internet Explorer\Main,Local Page = C:\Windows\SysWOW64\blank.htm
R1 - HKCU\Software\Microsoft\Windows\CurrentVersion\Internet Settings,ProxyOverride = *.local
R0 - HKCU\Software\Microsoft\Internet Explorer\Toolbar,LinksFolderName =
O1 - Hosts: ::1 localhost
O2 - BHO: ContributeBHO Class - {074C1DC5-9320-4A9A-947D-C042949C6216} - C:\Program Files (x86)\Adobe\Adobe Contribute CS5\Plugins\IEPlugin\contributeieplugin.dll
O2 - BHO: AcroIEHelperStub - {18DF081C-E8AD-4283-A596-FA578C2EBDC3} - C:\Program Files (x86)\Common Files\Adobe\Acrobat\ActiveX\AcroIEHelperShim.dll
O2 - BHO: avast! WebRep - {8E5E2654-AD2D-48bf-AC2D-D17F00898D06} - C:\Program Files\AVAST Software\Avast\aswWebRepIE.dll
O2 - BHO: Programme d'aide de l'Assistant de connexion Windows Live ID - {9030D464-4C02-4ABF-8ECC-5164760863C6} - C:\Program Files (x86)\Common Files\Microsoft Shared\Windows Live\WindowsLiveLogin.dll
O2 - BHO: Windows Live Messenger Companion Helper - {9FDDE16B-836F-4806-AB1F-1455CBEFF289} - C:\Program Files (x86)\Windows Live\Companion\companioncore.dll
O2 - BHO: SkypeIEPluginBHO - {AE805869-2E5C-4ED4-8F7B-F1F7851A4497} - C:\Program Files (x86)\Skype\Toolbars\Internet Explorer\skypeieplugin.dll
O2 - BHO: Java(tm) Plug-In 2 SSV Helper - {DBC80044-A445-435b-BC74-9C25C1C588A9} - C:\Program Files (x86)\Java\jre6\bin\jp2ssv.dll
O2 - BHO: Hotspot Shield Class - {F9E4A054-E9B1-4BC3-83A3-76A1AE736170} - C:\Program Files (x86)\Hotspot Shield\HssIE\HssIE.dll
O3 - Toolbar: DAEMON Tools Toolbar - {32099AAC-C132-4136-9E9A-4E364A424E17} - C:\Program Files (x86)\DAEMON Tools Toolbar\DTToolbar.dll
O3 - Toolbar: Contribute Toolbar - {517BDDE4-E3A7-4570-B21E-2B52B6139FC7} - C:\Program Files (x86)\Adobe\Adobe Contribute CS5\Plugins\IEPlugin\contributeieplugin.dll
O3 - Toolbar: avast! WebRep - {8E5E2654-AD2D-48bf-AC2D-D17F00898D06} - C:\Program Files\AVAST Software\Avast\aswWebRepIE.dll
O4 - HKLM\..\Run: [JMB36X IDE Setup] C:\Windows\RaidTool\xInsIDE.exe
O4 - HKLM\..\Run: [avast] "C:\Program Files\AVAST Software\Avast\avastUI.exe" /nogui
O4 - HKLM\..\Run: [APSDaemon] "C:\Program Files (x86)\Common Files\Apple\Apple Application Support\APSDaemon.exe"
O4 - HKLM\..\Run: [Malwarebytes' Anti-Malware] "C:\Program Files (x86)\Malwarebytes' Anti-Malware\mbamgui.exe" /starttray
O4 - HKCU\..\Run: [Sidebar] C:\Program Files (x86)\Windows Sidebar\sidebar.exe /autoRun
O4 - HKCU\..\Run: [iCloudServices] C:\Program Files (x86)\Common Files\Apple\Internet Services\iCloudServices.exe
O4 - HKCU\..\Run: [ApplePhotoStreams] C:\Program Files (x86)\Common Files\Apple\Internet Services\ApplePhotoStreams.exe
O4 - HKCU\..\Run: [0AD4BEEA9B59CC2A3D41D1480CF85AB2221A000C._service_run] "C:\Users\Jimmy\AppData\Local\Google\Chrome\Application\chrome.exe" --type=service
O4 - HKCU\..\Run: [uTorrent] "C:\Program Files (x86)\uTorrent\uTorrent.exe"
O4 - HKCU\..\Run: [ISUSPM Startup] C:\PROGRA~2\COMMON~1\INSTAL~1\UPDATE~1\isuspm.exe -startup
O4 - HKCU\..\Run: [Cobian Backup 10] "C:\Program Files (x86)\Cobian Backup 10\Cobian.exe"
O4 - HKCU\..\Run: [Glary Memory Optimizer] "C:\Program Files (x86)\Glary Utilities\memdefrag.exe" /autostart
O4 - HKCU\..\Policies\Explorer\Run: [Sidebar] C:\Program Files (x86)\Windows Sidebar\sidebar.exe /autoRun
O4 - Startup: Moniteur neufbox.lnk = C:\Program Files (x86)\Moniteur neufbox\Moniteur neufbox.exe
O4 - Global Startup: VPro520.lnk = C:\Windows\VPro520.exe
O8 - Extra context menu item: Add to Google Photos Screensa&ver - res://C:\Windows\system32\GPhotos.scr/200
O8 - Extra context menu item: E&xporter vers Microsoft Excel - res://C:\PROGRA~2\MICROS~1\Office12\EXCEL.EXE/3000
O8 - Extra context menu item: Free YouTube Download - C:\Users\Jimmy\AppData\Roaming\DVDVideoSoftIEHelpers\youtubedownload.htm
O8 - Extra context menu item: Free YouTube to Mp3 Converter - C:\Users\Jimmy\AppData\Roaming\DVDVideoSoftIEHelpers\youtubetomp3.htm
O8 - Extra context menu item: Liens de téléchargement avec Mega Manager... - C:\Program Files (x86)\Megaupload\Mega Manager\mm_file.htm
O9 - Extra button: @C:\Program Files (x86)\Windows Live\Companion\companionlang.dll,-600 - {0000036B-C524-4050-81A0-243669A86B9F} - C:\Program Files (x86)\Windows Live\Companion\companioncore.dll
O9 - Extra button: @C:\Program Files (x86)\Windows Live\Writer\WindowsLiveWriterShortcuts.dll,-1004 - {219C3416-8CB2-491a-A3C7-D9FCDDC9D600} - C:\Program Files (x86)\Windows Live\Writer\WriterBrowserExtension.dll
O9 - Extra 'Tools' menuitem: @C:\Program Files (x86)\Windows Live\Writer\WindowsLiveWriterShortcuts.dll,-1003 - {219C3416-8CB2-491a-A3C7-D9FCDDC9D600} - C:\Program Files (x86)\Windows Live\Writer\WriterBrowserExtension.dll
O9 - Extra button: @C:\Windows\WindowsMobile\INetRepl.dll,-222 - {2EAF5BB1-070F-11D3-9307-00C04FAE2D4F} - C:\Windows\WindowsMobile\INetRepl.dll
O9 - Extra button: (no name) - {2EAF5BB2-070F-11D3-9307-00C04FAE2D4F} - C:\Windows\WindowsMobile\INetRepl.dll
O9 - Extra 'Tools' menuitem: @C:\Windows\WindowsMobile\INetRepl.dll,-223 - {2EAF5BB2-070F-11D3-9307-00C04FAE2D4F} - C:\Windows\WindowsMobile\INetRepl.dll
O9 - Extra button: Skype Click to Call - {898EA8C8-E7FF-479B-8935-AEC46303B9E5} - C:\Program Files (x86)\Skype\Toolbars\Internet Explorer\skypeieplugin.dll
O9 - Extra 'Tools' menuitem: Skype Click to Call - {898EA8C8-E7FF-479B-8935-AEC46303B9E5} - C:\Program Files (x86)\Skype\Toolbars\Internet Explorer\skypeieplugin.dll
O9 - Extra button: Research - {92780B25-18CC-41C8-B9BE-3C9C571A8263} - C:\PROGRA~2\MICROS~1\Office12\REFIEBAR.DLL
O10 - Unknown file in Winsock LSP: c:\program files (x86)\common files\microsoft shared\windows live\wlidnsp.dll
O10 - Unknown file in Winsock LSP: c:\program files (x86)\common files\microsoft shared\windows live\wlidnsp.dll
O11 - Options group: [ACCELERATED_GRAPHICS] Accelerated graphics
O13 - Gopher Prefix:
O16 - DPF: {E2883E8F-472F-4FB0-9522-AC9BF37916A7} - http://platformdl.adobe.com/NOS/getPlusPlus/1.6/gp.cab
O17 - HKLM\System\CCS\Services\Tcpip\..\{E436700A-4581-4FE4-9239-3BB165A8E8BC}: NameServer = 208.67.222.222,208.67.220.220
O18 - Protocol: skype-ie-addon-data - {91774881-D725-4E58-B298-07617B9B86A8} - C:\Program Files (x86)\Skype\Toolbars\Internet Explorer\skypeieplugin.dll
O18 - Protocol: wlpg - {E43EF6CD-A37A-4A9B-9E6F-83F89B8E6324} - C:\Program Files (x86)\Windows Live\Photo Gallery\AlbumDownloadProtocolHandler.dll
O23 - Service: Adobe Active File Monitor V9 (AdobeActiveFileMonitor9.0) - Adobe Systems Incorporated - C:\Program Files (x86)\Adobe\Elements 9 Organizer\PhotoshopElementsFileAgent.exe
O23 - Service: Adobe Acrobat Update Service (AdobeARMservice) - Adobe Systems Incorporated - C:\Program Files (x86)\Common Files\Adobe\ARM\1.0\armsvc.exe
O23 - Service: @%SystemRoot%\system32\Alg.exe,-112 (ALG) - Unknown owner - C:\Windows\System32\alg.exe (file missing)
O23 - Service: AMD External Events Utility - Unknown owner - C:\Windows\system32\atiesrxx.exe (file missing)
O23 - Service: AMD FUEL Service - Advanced Micro Devices, Inc. - C:\Program Files\ATI Technologies\ATI.ACE\Fuel\Fuel.Service.exe
O23 - Service: AMD Reservation Manager - Advanced Micro Devices - C:\Program Files\ATI Technologies\ATI.ACE\Reservation Manager\AMD Reservation Manager.exe
O23 - Service: Apple Mobile Device - Apple Inc. - C:\Program Files (x86)\Common Files\Apple\Mobile Device Support\AppleMobileDeviceService.exe
O23 - Service: avast! Antivirus - AVAST Software - C:\Program Files\AVAST Software\Avast\AvastSvc.exe
O23 - Service: Service Bonjour (Bonjour Service) - Apple Inc. - C:\Program Files\Bonjour\mDNSResponder.exe
O23 - Service: Cobian Backup 10 Volume Shadow Copy service (cbVSCService) - CobianSoft, Luis Cobian - C:\Program Files (x86)\Cobian Backup 10\cbVSCService.exe
O23 - Service: @%SystemRoot%\system32\efssvc.dll,-100 (EFS) - Unknown owner - C:\Windows\System32\lsass.exe (file missing)
O23 - Service: EPSON V5 Service4(01) (EPSON_EB_RPCV4_01) - SEIKO EPSON CORPORATION - C:\ProgramData\EPSON\EPW!3 SSRP\E_S40STB.EXE
O23 - Service: EPSON V3 Service4(01) (EPSON_PM_RPCV4_01) - SEIKO EPSON CORPORATION - C:\ProgramData\EPSON\EPW!3 SSRP\E_S40RPB.EXE
O23 - Service: @%systemroot%\system32\fxsresm.dll,-118 (Fax) - Unknown owner - C:\Windows\system32\fxssvc.exe (file missing)
O23 - Service: FileZilla Server FTP server (FileZilla Server) - FileZilla Project - C:\Program Files (x86)\FileZilla Server\FileZilla Server.exe
O23 - Service: Futuremark SystemInfo Service - Futuremark Corporation - C:\Program Files (x86)\Futuremark\Futuremark SystemInfo\FMSISvc.exe
O23 - Service: Service Google Update (gupdate) (gupdate) - Google Inc. - C:\Program Files (x86)\Google\Update\GoogleUpdate.exe
O23 - Service: Service Google Update (gupdatem) (gupdatem) - Google Inc. - C:\Program Files (x86)\Google\Update\GoogleUpdate.exe
O23 - Service: Google Updater Service (gusvc) - Google - C:\Program Files (x86)\Google\Common\Google Updater\GoogleUpdaterService.exe
O23 - Service: Hotspot Shield Service (hshld) - Unknown owner - C:\Program Files (x86)\Hotspot Shield\bin\openvpnas.exe
O23 - Service: Hotspot Shield Routing Service (HssSrv) - AnchorFree Inc. - C:\Program Files (x86)\Hotspot Shield\HssWPR\hsssrv.exe
O23 - Service: Hotspot Shield Tray Service (HssTrayService) - Unknown owner - C:\Program Files (x86)\Hotspot Shield\bin\HssTrayService.EXE
O23 - Service: Hotspot Shield Monitoring Service (HssWd) - Unknown owner - C:\Program Files (x86)\Hotspot Shield\bin\hsswd.exe
O23 - Service: InstallDriver Table Manager (IDriverT) - Macrovision Corporation - C:\Program Files (x86)\Common Files\InstallShield\Driver\11\Intel 32\IDriverT.exe
O23 - Service: Service de l'iPod (iPod Service) - Apple Inc. - C:\Program Files\iPod\bin\iPodService.exe
O23 - Service: @keyiso.dll,-100 (KeyIso) - Unknown owner - C:\Windows\system32\lsass.exe (file missing)
O23 - Service: Ma-Config Service (maconfservice) - CybelSoft - C:\Program Files\ma-config.com\x64\maconfservice.exe
O23 - Service: MBAMService - Malwarebytes Corporation - C:\Program Files (x86)\Malwarebytes' Anti-Malware\mbamservice.exe
O23 - Service: @comres.dll,-2797 (MSDTC) - Unknown owner - C:\Windows\System32\msdtc.exe (file missing)
O23 - Service: @%SystemRoot%\System32\netlogon.dll,-102 (Netlogon) - Unknown owner - C:\Windows\system32\lsass.exe (file missing)
O23 - Service: PnkBstrA - Unknown owner - C:\Windows\system32\PnkBstrA.exe
O23 - Service: @%systemroot%\system32\psbase.dll,-300 (ProtectedStorage) - Unknown owner - C:\Windows\system32\lsass.exe (file missing)
O23 - Service: @%systemroot%\system32\Locator.exe,-2 (RpcLocator) - Unknown owner - C:\Windows\system32\locator.exe (file missing)
O23 - Service: @%SystemRoot%\system32\samsrv.dll,-1 (SamSs) - Unknown owner - C:\Windows\system32\lsass.exe (file missing)
O23 - Service: SFR.DashBoard.Service - SFR - C:\Program Files (x86)\SFR\Gestionnaire de Connexion\SFR.DashBoard.Service.exe
O23 - Service: @%SystemRoot%\system32\snmptrap.exe,-3 (SNMPTRAP) - Unknown owner - C:\Windows\System32\snmptrap.exe (file missing)
O23 - Service: @%systemroot%\system32\spoolsv.exe,-1 (Spooler) - Unknown owner - C:\Windows\System32\spoolsv.exe (file missing)
O23 - Service: @%SystemRoot%\system32\sppsvc.exe,-101 (sppsvc) - Unknown owner - C:\Windows\system32\sppsvc.exe (file missing)
O23 - Service: SwitchBoard - Adobe Systems Incorporated - C:\Program Files (x86)\Common Files\Adobe\SwitchBoard\SwitchBoard.exe
O23 - Service: TeamViewer 5 (TeamViewer5) - TeamViewer GmbH - C:\Program Files (x86)\TeamViewer\Version5\TeamViewer_Service.exe
O23 - Service: TeamViewer 6 (TeamViewer6) - TeamViewer GmbH - C:\Program Files (x86)\TeamViewer\Version6\TeamViewer_Service.exe
O23 - Service: TeamViewer 7 (TeamViewer7) - TeamViewer GmbH - C:\Program Files (x86)\TeamViewer\Version7\TeamViewer_Service.exe
O23 - Service: @%SystemRoot%\system32\ui0detect.exe,-101 (UI0Detect) - Unknown owner - C:\Windows\system32\UI0Detect.exe (file missing)
O23 - Service: @%SystemRoot%\system32\vaultsvc.dll,-1003 (VaultSvc) - Unknown owner - C:\Windows\system32\lsass.exe (file missing)
O23 - Service: @%SystemRoot%\system32\vds.exe,-100 (vds) - Unknown owner - C:\Windows\System32\vds.exe (file missing)
O23 - Service: @%systemroot%\system32\vssvc.exe,-102 (VSS) - Unknown owner - C:\Windows\system32\vssvc.exe (file missing)
O23 - Service: @%SystemRoot%\system32\Wat\WatUX.exe,-601 (WatAdminSvc) - Unknown owner - C:\Windows\system32\Wat\WatAdminSvc.exe (file missing)
O23 - Service: @%systemroot%\system32\wbengine.exe,-104 (wbengine) - Unknown owner - C:\Windows\system32\wbengine.exe (file missing)
O23 - Service: @%Systemroot%\system32\wbem\wmiapsrv.exe,-110 (wmiApSrv) - Unknown owner - C:\Windows\system32\wbem\WmiApSrv.exe (file missing)
O23 - Service: @%PROGRAMFILES%\Windows Media Player\wmpnetwk.exe,-101 (WMPNetworkSvc) - Unknown owner - C:\Program Files (x86)\Windows Media Player\wmpnetwk.exe (file missing)

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End of file - 15365 bytes

Merci pour votre aide :)