Problemi a incredximail... forse linkoptimizer?

[squalotto]

Ciao a tutti, vorrei chiedere agli esperti se ne sanno qualcosa:
incredimail ed in particolare imapp.exe mi prende tutte le risorse del sistema
Questo computer è stato di recente infettato da linkoptimizer (forse tolto con successo). Se termino come processo imapp, il pc va una bomba.
Vi allego il log di Hj:

Logfile of HijackThis v1.99.1
Scan saved at 16.14.18, on 04/03/07
Platform: Windows XP SP2 (WinNT 5.01.2600)
MSIE: Internet Explorer v6.00 SP2 (6.00.2900.2180)

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:\Programmi\Windows Defender\MsMpEng.exe
C:\WINDOWS\System32\svchost.exe
C:\WINDOWS\system32\Ati2evxx.exe
C:\WINDOWS\Explorer.EXE
C:\WINDOWS\system32\brsvc01a.exe
C:\WINDOWS\system32\spoolsv.exe
C:\WINDOWS\system32\brss01a.exe
C:\WINDOWS\SOUNDMAN.EXE
C:\Programmi\eBay\eBay Toolbar2\eBayTBDaemon.exe
C:\PROGRA~1\ALWILS~1\Avast4\ashDisp.exe
C:\Program Files\Libero\Adsl\dslstat.exe
C:\Program Files\Libero\Adsl\dslagent.exe
C:\Programmi\Webroot\Spy Sweeper\SpySweeperUI.exe
C:\Programmi\Prevx1\PXConsole.exe
C:\Programmi\Windows Defender\MSASCui.exe
C:\WINDOWS\system32\ctfmon.exe
C:\Programmi\Google\GoogleToolbarNotifier\1.2.1128.5462\GoogleToolbarNotifier.exe
C:\Programmi\Alwil Software\Avast4\aswUpdSv.exe
C:\Programmi\Alwil Software\Avast4\ashServ.exe
C:\Programmi\File comuni\Microsoft Shared\VS7Debug\mdm.exe
C:\Programmi\Prevx1\PXAgent.exe
C:\PROGRA~1\INCRED~1\bin\IMApp.exe
C:\WINDOWS\system32\svchost.exe
C:\Programmi\Alwil Software\Avast4\setup\avast.setup
C:\Programmi\Webroot\Spy Sweeper\SpySweeper.exe
C:\PROGRA~1\MOZILL~1\FIREFOX.EXE
C:\Programmi\Alwil Software\Avast4\ashMaiSv.exe
C:\Programmi\Alwil Software\Avast4\ashWebSv.exe
C:\Programmi\Webroot\Spy Sweeper\SSU.EXE
C:\WINDOWS\System32\svchost.exe
C:\Documents and Settings\Toto.TOTO-04E0450896\Desktop\hijackthis\HijackThis.exe
C:\WINDOWS\system32\wuauclt.exe

R0 - HKCU\Software\Microsoft\Internet Explorer\Main,Start Page = http://www.google.it/
R0 - HKCU\Software\Microsoft\Internet Explorer\Toolbar,LinksFolderName = Collegamenti
R3 - Default URLSearchHook is missing
F2 - REG:system.ini: UserInit=c:\windows\system32\userinit.exe,"c:\windows\system32\corelword.exe",
O2 - BHO: AcroIEHlprObj Class - {06849E9F-C8D7-4D59-B87D-784B7D6BE0B3} - C:\Programmi\Adobe\Acrobat 6.0\Reader\ActiveX\AcroIEHelper.dll
O2 - BHO: Malicious Scripts Scanner - {55EA1964-F5E4-4D6A-B9B2-125B37655FCB} - C:\Documents and Settings\All Users.WINDOWS\Dati applicazioni\Prevx\pxbho.dll
O2 - BHO: Google Toolbar Helper - {AA58ED58-01DD-4d91-8333-CF10577473F7} - c:\programmi\google\googletoolbar4.dll
O2 - BHO: Class - {F2C626B0-11CD-8500-3A85-9BCF7A941899} - (no file)
O3 - Toolbar: eBay Toolbar - {92085AD4-F48A-450D-BD93-B28CC7DF67CE} - C:\Programmi\eBay\eBay Toolbar2\eBayTB.dll
O3 - Toolbar: Yahoo! Toolbar con blocco Pop-Up - {EF99BD32-C1FB-11D2-892F-0090271D4F88} - C:\Programmi\Yahoo!\Companion\Installs\cpn\yt.dll
O3 - Toolbar: &Google - {2318C2B1-4965-11d4-9B18-009027A5CD4F} - c:\programmi\google\googletoolbar4.dll
O4 - HKLM\..\Run: [SoundMan] SOUNDMAN.EXE
O4 - HKLM\..\Run: [eBayToolbar] "C:\Programmi\eBay\eBay Toolbar2\eBayTBDaemon.exe"
O4 - HKLM\..\Run: [avast!] C:\PROGRA~1\ALWILS~1\Avast4\ashDisp.exe
O4 - HKLM\..\Run: [DSLSTATEXE] "C:\Program Files\Libero\Adsl\dslstat.exe" icon
O4 - HKLM\..\Run: [DSLAGENTEXE] "C:\Program Files\Libero\Adsl\dslagent.exe"
O4 - HKLM\..\Run: [SpySweeper] "C:\Programmi\Webroot\Spy Sweeper\SpySweeperUI.exe" /startintray
O4 - HKLM\..\Run: [PrevxOne] "C:\Programmi\Prevx1\PXConsole.exe"
O4 - HKLM\..\Run: [Windows Defender] "C:\Programmi\Windows Defender\MSASCui.exe" -hide
O4 - HKCU\..\Run: [ctfmon.exe] C:\WINDOWS\system32\ctfmon.exe
O4 - HKCU\..\Run: [swg] C:\Programmi\Google\GoogleToolbarNotifier\1.2.1128.5462\GoogleToolbarNotifier.exe
O4 - HKCU\..\Run: [IncrediMail] "C:\PROGRA~1\INCRED~1\bin\IncMail.exe" /c
O8 - Extra context menu item: &eBay Search - res://C:\Programmi\eBay\eBay Toolbar2\eBayTb.dll/RCSearch.html
O8 - Extra context menu item: E&sporta in Microsoft Excel - res://C:\PROGRA~1\MICROS~2\Office10\EXCEL.EXE/3000
O9 - Extra button: Messenger - {FB5F1910-F110-11d2-BB9E-00C04F795683} - C:\Programmi\Messenger\msmsgs.exe
O9 - Extra 'Tools' menuitem: Windows Messenger - {FB5F1910-F110-11d2-BB9E-00C04F795683} - C:\Programmi\Messenger\msmsgs.exe
O12 - Plugin for .spop: C:\Programmi\Internet Explorer\Plugins\NPDocBox.dll
O16 - DPF: {0EB0E74A-2A76-4AB3-A7FB-9BD8C29F7F75} (CKAVWebScan Object) - http://www.kaspersky.com/kos/eng/par...an_unicode.cab
O16 - DPF: {17492023-C23A-453E-A040-C7C580BBF700} (Windows Genuine Advantage Validation Tool) - http://go.microsoft.com/fwlink/?linkid=39204
O16 - DPF: {6414512B-B978-451D-A0D8-FCFDF33E833C} (WUWebControl Class) - http://update.microsoft.com/windowsu...?1173008857890
O16 - DPF: {9A9307A0-7DA4-4DAF-B042-5009F29E09E1} (ActiveScan Installer Class) - http://acs.pandasoftware.com/actives...ree/asinst.cab
O17 - HKLM\System\CCS\Services\Tcpip\..\{E57FD354-09F0-4E94-9F70-B5D2758EEA16}: NameServer = 192.168.1.1
O20 - AppInit_DLLs:
O20 - Winlogon Notify: WgaLogon - C:\WINDOWS\
O20 - Winlogon Notify: WRNotifier - C:\WINDOWS\SYSTEM32\WRLogonNTF.dll
O23 - Service: avast! iAVS4 Control Service (aswUpdSv) - Unknown owner - C:\Programmi\Alwil Software\Avast4\aswUpdSv.exe
O23 - Service: Ati HotKey Poller - ATI Technologies Inc. - 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! Mail Scanner - Unknown owner - C:\Programmi\Alwil Software\Avast4\ashMaiSv.exe" /service (file missing)
O23 - Service: avast! Web Scanner - Unknown owner - C:\Programmi\Alwil Software\Avast4\ashWebSv.exe" /service (file missing)
O23 - Service: BrSplService (Brother XP spl Service) - brother Industries Ltd - C:\WINDOWS\system32\brsvc01a.exe
O23 - Service: Google Updater Service (gusvc) - Google - C:\Programmi\Google\Common\Google Updater\GoogleUpdaterService.exe
O23 - Service: Prevx Agent (PREVXAgent) - Unknown owner - C:\Programmi\Prevx1\PXAgent.exe" -f (file missing)
O23 - Service: Sistema Webroot Spy Sweeper (WebrootSpySweeperService) - Webroot Software, Inc. - C:\Programmi\Webroot\Spy Sweeper\SpySweeper.exe

Consigli? Grazie a tutti