Navegador voltando pagina sozinho, é virus?

Olá!
A alguns dias notei meu pc demorando um pouco pra inicializar, depois por umas duas vezes o mouse se moveu (bem pouquinho) sozinho, meio q tremendo e agora a pagina fica voltando sozinha, estou digitando essa mensagem no wordpad pq não consigo na tela do site. Começou quando abri meu email, pode ser algum virus q veio dele, mas não abri nenhum email suspeito ou de propaganda.
Estou deixando o log do hijackthis para olharem, por favor me ajudem a me livrar disso... ta insuportavel.
Logfile of Trend Micro HijackThis v2.0.2
Scan saved at 21:18:54, on 19/7/2010
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\csrss.exe
C:\WINDOWS\system32\winlogon.exe
C:\WINDOWS\system32\services.exe
C:\WINDOWS\system32\lsass.exe
C:\WINDOWS\system32\svchost.exe
C:\Arquivos de programas\Windows Defender\MsMpEng.exe
C:\WINDOWS\System32\svchost.exe
C:\WINDOWS\system32\svchost.exe
C:\WINDOWS\Explorer.EXE
C:\WINDOWS\system32\spoolsv.exe
C:\Arquivos de programas\Avira\AntiVir Desktop\sched.exe
C:\Arquivos de programas\Avira\AntiVir Desktop\avguard.exe
C:\Arquivos de programas\Java\jre6\bin\jqs.exe
C:\Arquivos de programas\Panda USB Vaccine\USBVaccine.exe
C:\Arquivos de programas\Arquivos comuns\Java\Java Update\jusched.exe
C:\WINDOWS\system32\spool\drivers\w32x86\3\hpztsb04.exe
C:\Arquivos de programas\Windows Defender\MSASCui.exe
C:\Arquivos de programas\Avira\AntiVir Desktop\avgnt.exe
C:\WINDOWS\system32\ctfmon.exe
C:\Arquivos de programas\Free Download Manager\fdm.exe
C:\Arquivos de programas\Messenger\msmsgs.exe
C:\Arquivos de programas\VIVO S893v\S893v.exe
C:\Arquivos de programas\eMule\emule.exe
C:\Arquivos de programas\Windows Live\Messenger\msnmsgr.exe
C:\Arquivos de programas\Windows Live\Contacts\wlcomm.exe
C:\Arquivos de programas\Internet Explorer\iexplore.exe
C:\Arquivos de programas\Internet Explorer\iexplore.exe
D:\Downloads\HijackThis.exe
R0 - HKLM\Software\Microsoft\Internet Explorer\Main,Start Page = about:blank
R0 - HKCU\Software\Microsoft\Internet Explorer\Main,Local Page =
R0 - HKLM\Software\Microsoft\Internet Explorer\Main,Local Page =
O2 - BHO: &Yahoo! Toolbar Helper - {02478D38-C3F9-4efb-9B51-7695ECA05670} - C:\Arquivos de programas\Yahoo!\Companion\Installs\cpn\yt.dll
O2 - BHO: Barra de ferramentas ALOT Helper - {14CEEAFF-96DD-4101-AE37-D5ECDC23C3F6} - C:\Arquivos de programas\alot\bin\BHO\alotBHO.dll
O2 - BHO: AcroIEHelperStub - {18DF081C-E8AD-4283-A596-FA578C2EBDC3} - C:\Arquivos de programas\Arquivos comuns\Adobe\Acrobat\ActiveX\AcroIEHelperShim.dll
O2 - BHO: Skype add-on (mastermind) - {22BF413B-C6D2-4d91-82A9-A0F997BA588C} - C:\Arquivos de programas\Skype\Toolbars\Internet Explorer\SkypeIEPlugin.dll
O2 - BHO: CompSegIB - {2E3C3651-B19C-4DD9-A979-901EC3E930AF} - C:\Arquivos de programas\Scpad\scpsssh2.dll
O2 - BHO: Programa Auxiliar de Início de Sessão do Windows Live - {9030D464-4C02-4ABF-8ECC-5164760863C6} - C:\Arquivos de programas\Arquivos comuns\Microsoft Shared\Windows Live\WindowsLiveLogin.dll
O2 - BHO: FDMIECookiesBHO Class - {CC59E0F9-7E43-44FA-9FAA-8377850BF205} - C:\Arquivos de programas\Free Download Manager\iefdm2.dll
O2 - BHO: Java(tm) Plug-In 2 SSV Helper - {DBC80044-A445-435b-BC74-9C25C1C588A9} - C:\Arquivos de programas\Java\jre6\bin\jp2ssv.dll
O2 - BHO: JQSIEStartDetectorImpl - {E7E6F031-17CE-4C07-BC86-EABFE594F69C} - C:\Arquivos de programas\Java\jre6\lib\deploy\jqs\ie\jqs_plugin.dll
O2 - BHO: SingleInstance Class - {FDAD4DA1-61A2-4FD8-9C17-86F7AC245081} - C:\Arquivos de programas\Yahoo!\Companion\Installs\cpn\YTSingleInstance.dll
O3 - Toolbar: Barra de ferramentas ALOT - {5AA2BA46-9913-4dc7-9620-69AB0FA17AE7} - C:\Arquivos de programas\alot\bin\alot.dll
O3 - Toolbar: Barra de Ferramentas do Yahoo! - {EF99BD32-C1FB-11D2-892F-0090271D4F88} - C:\Arquivos de programas\Yahoo!\Companion\Installs\cpn\yt.dll
O4 - HKLM\..\Run: [SunJavaUpdateSched] "C:\Arquivos de programas\Arquivos comuns\Java\Java Update\jusched.exe"
O4 - HKLM\..\Run: [HPDJ Taskbar Utility] C:\WINDOWS\system32\spool\drivers\w32x86\3\hpztsb04.exe
O4 - HKLM\..\Run: [Windows Defender] "C:\Arquivos de programas\Windows Defender\MSASCui.exe" -hide
O4 - HKLM\..\Run: [avgnt] "C:\Arquivos de programas\Avira\AntiVir Desktop\avgnt.exe" /min
O4 - HKCU\..\Run: [ctfmon.exe] C:\WINDOWS\system32\ctfmon.exe
O4 - HKCU\..\Run: [Free Download Manager] "C:\Arquivos de programas\Free Download Manager\fdm.exe" -autorun
O4 - HKCU\..\Run: [MSMSGS] "C:\Arquivos de programas\Messenger\msmsgs.exe" /background
O4 - HKUS\S-1-5-19\..\Run: [CTFMON.EXE] C:\WINDOWS\system32\CTFMON.EXE (User 'LOCAL SERVICE')
O4 - HKUS\S-1-5-20\..\Run: [CTFMON.EXE] C:\WINDOWS\system32\CTFMON.EXE (User 'NETWORK SERVICE')
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')
O8 - Extra context menu item: Add to AMV Convert Tool... - C:\Arquivos de programas\MP3 Player Utilities 3.75\AMVConverter\grab.html
O8 - Extra context menu item: Add to AMV Converter... - C:\Arquivos de programas\MP3 Player Utilities 4.15\AMVConverter\grab.html
O8 - Extra context menu item: Baixar com o Free Download Manager - file://C:\Arquivos de programas\Free Download Manager\dllink.htm
O8 - Extra context menu item: Baixar tudo com o Free Download Manager - file://C:\Arquivos de programas\Free Download Manager\dlall.htm
O8 - Extra context menu item: Baixar vídeo com o Free Download Manager - file://C:\Arquivos de programas\Free Download Manager\dlfvideo.htm
O8 - Extra context menu item: Download selecionado pelo Free Download Manager - file://C:\Arquivos de programas\Free Download Manager\dlselected.htm
O8 - Extra context menu item: E&xportar para o Microsoft Excel - res://C:\ARQUIV~1\MICROS~3\OFFICE11\EXCEL.EXE/3000
O8 - Extra context menu item: MediaManager tool grab multimedia file - C:\Arquivos de programas\MP3 Player Utilities 4.15\MediaManager\grab.html
O9 - Extra button: Skype - {77BF5300-1474-4EC7-9980-D32B190E9B07} - C:\Arquivos de programas\Skype\Toolbars\Internet Explorer\SkypeIEPlugin.dll
O9 - Extra button: Pesquisar - {92780B25-18CC-41C8-B9BE-3C9C571A8263} - C:\ARQUIV~1\MICROS~3\OFFICE11\REFIEBAR.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:\Arquivos de programas\Messenger\msmsgs.exe
O9 - Extra 'Tools' menuitem: Windows Messenger - {FB5F1910-F110-11d2-BB9E-00C04F795683} - C:\Arquivos de programas\Messenger\msmsgs.exe
O14 - IERESET.INF: SEARCH_PAGE_URL=&http://home.microsoft.com/intl/br/access/allinone.asp
O16 - DPF: {6414512B-B978-451D-A0D8-FCFDF33E833C} (WUWebControl Class) - http://update.microsoft.com/windowsupdate/v6/V5Controls/en/x86/client/wuweb_site.cab?1041396138439
O16 - DPF: {6E32070A-766D-4EE6-879C-DC1FA91D2FC3} (MUWebControl Class) - http://www.update.microsoft.com/microsoftupdate/v6/V5Controls/en/x86/client/muweb_site.cab?1267221857988
O16 - DPF: {9191F686-7F0A-441D-8A98-2FE3AC1BD913} (ActiveScan 2.0 Installer Class) - http://acs.pandasoftware.com/activescan/cabs/as2stubie.cab
O16 - DPF: {D27CDB6E-AE6D-11CF-96B8-444553540000} (Shockwave Flash Object) - http://fpdownload2.macromedia.com/get/shockwave/cabs/flash/swflash.cab
O16 - DPF: {E2883E8F-472F-4FB0-9522-AC9BF37916A7} - http://platformdl.adobe.com/NOS/getPlusPlus/1.6/gp.cab
O17 - HKLM\System\CCS\Services\Tcpip\..\{CF86D021-6CA7-4CFD-803E-9610B94908D4}: NameServer = 200.204.0.10
O17 - HKLM\System\CCS\Services\Tcpip\..\{F1CC6161-F5F5-4D6C-9114-9D1CB6A236D4}: NameServer = 200.142.130.203 200.220.227.57
O18 - Protocol: skype4com - {FFC8B962-9B40-4DFF-9458-1830C7DD7F5D} - C:\ARQUIV~1\ARQUIV~1\Skype\SKYPE4~1.DLL
O21 - SSODL: CompIBBrd - {A3717295-941D-416F-9384-ED1736729F1C} - C:\Arquivos de programas\Scpad\scpLIB.dll
O22 - SharedTaskScheduler: scpLIB - {A3717295-941D-416F-9384-ED1736729F1C} - C:\Arquivos de programas\Scpad\scpLIB.dll
O23 - Service: Avira AntiVir Programador (AntiVirSchedulerService) - Avira GmbH - C:\Arquivos de programas\Avira\AntiVir Desktop\sched.exe
O23 - Service: Avira AntiVir Guard (AntiVirService) - Avira GmbH - C:\Arquivos de programas\Avira\AntiVir Desktop\avguard.exe
O23 - Service: Java Quick Starter (JavaQuickStarterService) - Sun Microsystems, Inc. - C:\Arquivos de programas\Java\jre6\bin\jqs.exe
O23 - Service: PC Tools Auxiliary Service (sdAuxService) - PC Tools - C:\Arquivos de programas\Spyware Doctor\pctsAuxs.exe
O23 - Service: PC Tools Security Service (sdCoreService) - PC Tools - C:\Arquivos de programas\Spyware Doctor\pctsSvc.exe
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