svchost.exe crash e connessione che cade spesso

[Ispanico82]

Ciao a tutti,

grazie delle vostre preziose risposte.

Ho cercato di fare un po'di pulizia... ho fixato quanto mi avete detto... poi ho utilizzato vari programmi... spybot, sysclean, killbox, filemonster, ccleaner che mi hanno cancellato qualche trojan che avevo.
Purtroppo però il problema persiste e mi sa che è relativo al fatto che, con qualsiasi programma che ho usato, non riesco a cancellare questi due trojan:

O20 - Winlogon Notify: Imagnce - C:\WINDOWS\SYSTEM32\Imagnce.dll
O20 - Winlogon Notify: rpcc - C:\WINDOWS\System32\rpcc.dll

svchost mi crasha ancora quando avvio windows

Ecco il logfile completo di HijackThis in questo momento:

Logfile of HijackThis v1.99.1
Scan saved at 18.57.17, on 07/05/2007
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\system32\spoolsv.exe
C:\WINDOWS\Explorer.EXE
C:\WINDOWS\SOUNDMAN.EXE
C:\Programmi\MessengerPlus! 3\MsgPlus.exe
C:\WINDOWS\System32\ctfmon.exe
C:\Programmi\MSN Messenger\msnmsgr.exe
C:\Programmi\EZ-DUB\EZ-DUB.exe
C:\Programmi\ZyXEL Corporation\ZyAIR WLAN Utility\ZyAIR.EXE
C:\Programmi\Alwil Software\Avast4\aswUpdSv.exe
C:\WINDOWS\System32\Ati2evxx.exe
C:\Programmi\Alwil Software\Avast4\ashServ.exe
C:\WINDOWS\System32\inetsrv\inetinfo.exe
C:\Programmi\File comuni\Ulead Systems\DVD\ULCDRSvr.exe
C:\Programmi\Alwil Software\Avast4\ashWebSv.exe
C:\WINDOWS\System32\svchost.exe
C:\WINDOWS\System32\dwwin.exe
C:\Programmi\Opera\Opera.exe
C:\WINDOWS\System32\wuauclt.exe
C:\Programmi\HijackThis\HijackThis.exe

R0 - HKCU\Software\Microsoft\Internet Explorer\Main,Local Page = 
R0 - HKCU\Software\Microsoft\Internet Explorer\Toolbar,LinksFolderName = Collegamenti
R3 - URLSearchHook: Yahoo! Toolbar con blocco Pop-Up - {EF99BD32-C1FB-11D2-892F-0090271D4F88} - C:\Programmi\Yahoo!\Companion\Installs\cpn0\yt.dll
O2 - BHO: Yahoo! Toolbar Helper - {02478D38-C3F9-4EFB-9B51-7695ECA05670} - C:\Programmi\Yahoo!\Companion\Installs\cpn0\yt.dll
O2 - BHO: Supporto di collegamento per Adobe PDF Reader - {06849E9F-C8D7-4D59-B87D-784B7D6BE0B3} - C:\Programmi\File comuni\Adobe\Acrobat\ActiveX\AcroIEHelper.dll
O2 - BHO: (no name) - {3e5a237b-6527-4f69-a3b3-f280b8a45501} - C:\WINDOWS\SYSTEM32\Imagnce.dll
O2 - BHO: (no name) - {53707962-6F74-2D53-2644-206D7942484F} - C:\Programmi\Spybot - Search & Destroy\SDHelper.dll
O2 - BHO: SSVHelper Class - {761497BB-D6F0-462C-B6EB-D4DAF1D92D43} - C:\Programmi\Java\jre1.5.0_10\bin\ssv.dll
O2 - BHO: Google Toolbar Helper - {AA58ED58-01DD-4d91-8333-CF10577473F7} - c:\programmi\google\googletoolbar2.dll
O2 - BHO: (no name) - {D651AFF4-9590-424d-BD1E-8E33E090DFB3} - C:\WINDOWS\System32\tmp1.tmp.dll
O3 - Toolbar: &Radio - {8E718888-423F-11D2-876E-00A0C9082467} - C:\WINDOWS\System32\msdxm.ocx
O3 - Toolbar: &Google - {2318C2B1-4965-11d4-9B18-009027A5CD4F} - c:\programmi\google\googletoolbar2.dll
O3 - Toolbar: Yahoo! Toolbar con blocco Pop-Up - {EF99BD32-C1FB-11D2-892F-0090271D4F88} - C:\Programmi\Yahoo!\Companion\Installs\cpn0\yt.dll
O4 - HKLM\..\Run: [SoundMan] SOUNDMAN.EXE
O4 - HKLM\..\Run: [MessengerPlus3] "C:\Programmi\MessengerPlus! 3\MsgPlus.exe"
O4 - HKLM\..\Run: [ATIPTA] C:\Programmi\ATI Technologies\ATI Control Panel\atiptaxx.exe
O4 - HKLM\..\Run: [SunJavaUpdateSched] "C:\Programmi\Java\jre1.5.0_10\bin\jusched.exe"
O4 - HKLM\..\Run: [avast!] C:\PROGRA~1\ALWILS~1\Avast4\ashDisp.exe
O4 - HKLM\..\Run: [TkBellExe] "C:\Programmi\File comuni\Real\Update_OB\realsched.exe"  -osboot
O4 - HKLM\..\Run: [KernelFaultCheck] %systemroot%\system32\dumprep 0 -k
O4 - HKLM\..\Run: [NeroFilterCheck] C:\WINDOWS\system32\NeroCheck.exe
O4 - HKLM\..\Run: [UserFaultCheck] %systemroot%\system32\dumprep 0 -u
O4 - HKLM\..\Run: [WindowsService] rundll32.exe "C:\WINDOWS\qopnom.dll",realset
O4 - HKLM\..\Run: [MSConfig] C:\WINDOWS\PCHealth\HelpCtr\Binaries\MSConfig.exe /auto
O4 - HKCU\..\Run: [ctfmon.exe] C:\WINDOWS\System32\ctfmon.exe
O4 - HKCU\..\Run: [WhatPulse] C:\PROGRA~1\WHATPU~1\WHATPU~1.EXE
O4 - HKCU\..\Run: [MessengerPlus3] "C:\Programmi\MessengerPlus! 3\MsgPlus.exe" /WinStart
O4 - HKCU\..\Run: [BgMonitor_{79662E04-7C6C-4d9f-84C7-88D8A56B10AA}] "C:\Programmi\File comuni\Ahead\Lib\NMBgMonitor.exe"
O4 - HKCU\..\Run: [msnmsgr] "C:\Programmi\MSN Messenger\msnmsgr.exe" /background
O4 - Global Startup: Adobe Reader Speed Launch.lnk = C:\Programmi\Adobe\Acrobat 7.0\Reader\reader_sl.exe
O4 - Global Startup: Adobe Reader Synchronizer.lnk = C:\Programmi\Adobe\Reader 8.0\Reader\AdobeCollabSync.exe
O4 - Global Startup: Avvio veloce di Adobe Reader.lnk = C:\Programmi\Adobe\Reader 8.0\Reader\reader_sl.exe
O4 - Global Startup: Avvio veloce di Microsoft Office OneNote 2003.lnk = C:\Programmi\Microsoft Office\OFFICE11\ONENOTEM.EXE
O4 - Global Startup: EZ-DUB Finder.lnk = C:\Programmi\EZ-DUB\EZ-DUB.exe
O4 - Global Startup: ZyAIR.lnk = ?
O9 - Extra button: (no name) - {08B0E5C0-4FCB-11CF-AAA5-00401C608501} - C:\Programmi\Java\jre1.5.0_10\bin\ssv.dll
O9 - Extra 'Tools' menuitem: Sun Java Console - {08B0E5C0-4FCB-11CF-AAA5-00401C608501} - C:\Programmi\Java\jre1.5.0_10\bin\ssv.dll
O9 - Extra button: Ricerche - {92780B25-18CC-41C8-B9BE-3C9C571A8263} - C:\PROGRA~1\MICROS~2\OFFICE11\REFIEBAR.DLL
O16 - DPF: {30528230-99f7-4bb4-88d8-fa1d4f56a2ab} (YInstStarter Class) - C:\Programmi\Yahoo!\Common\yinsthelper.dll
O16 - DPF: {4F1E5B1A-2A80-42CA-8532-2D05CB959537} (MSN Photo Upload Tool) - http://by123fd.bay123.hotmail.msn.co...s/MsnPUpld.cab
O16 - DPF: {8E0D4DE5-3180-4024-A327-4DFAD1796A8D} (MessengerStatsClient Class) - http://messenger.zone.msn.com/binary...t.cab31267.cab
O16 - DPF: {B38870E4-7ECB-40DA-8C6A-595F0A5519FF} (MsnMessengerSetupDownloadControl Class) - http://messenger.msn.com/download/ms...downloader.cab
O16 - DPF: {F6BF0D00-0B2A-4A75-BF7B-F385591623AF} (Solitaire Showdown Class) - http://messenger.zone.msn.com/binary...n.cab31267.cab
O20 - Winlogon Notify: Imagnce - C:\WINDOWS\SYSTEM32\Imagnce.dll
O20 - Winlogon Notify: rpcc - C:\WINDOWS\System32\rpcc.dll
O23 - Service: avast! iAVS4 Control Service (aswUpdSv) - Unknown owner - C:\Programmi\Alwil Software\Avast4\aswUpdSv.exe
O23 - Service: Ati HotKey Poller - Unknown owner - C:\WINDOWS\System32\Ati2evxx.exe
O23 - Service: ATI Smart - Unknown owner - C:\WINDOWS\system32\ati2sgag.exe
O23 - Service: avast! Antivirus - Unknown owner - C:\Programmi\Alwil Software\Avast4\ashServ.exe
O23 - Service: avast! Web Scanner - Unknown owner - C:\Programmi\Alwil Software\Avast4\ashWebSv.exe" /service (file missing)
O23 - Service: Ulead Burning Helper (UleadBurningHelper) - Ulead Systems, Inc. - C:\Programmi\File comuni\Ulead Systems\DVD\ULCDRSvr.exe

tra l'altro ora anche questo mi crasha all'inizio

O4 - HKLM\..\Run: [WindowsService] rundll32.exe "C:\WINDOWS\qopnom.dll",realset

Qualche ulteriore suggerimento su cosa si può fare?

Grazie mille ancora