Ok, su questo pc ho windows xp, avast e windows firewall. Il pc è molto lento... ho fatto una scansione con hjakthis e qs è il risultato, poi procederò a postare anche il risultato di malwarebytes...

intendo come procedo? cosa fixo? grazie

codice:
Logfile of Trend Micro HijackThis v2.0.2
Scan saved at 17.21.21, on 19/09/2011
Platform: Windows XP SP2 (WinNT 5.01.2600)
MSIE: Internet Explorer v6.00 SP2 (6.00.2900.2180)
Boot mode: Normal

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:\Programmi\Alwil Software\Avast5\AvastSvc.exe
C:\WINDOWS\Explorer.EXE
C:\Programmi\Spyware Terminator\SpywareTerminatorShield.exe
C:\WINDOWS\system32\spoolsv.exe
C:\WINDOWS\system32\PwsTray.exe
C:\Programmi\Alwil Software\Avast5\avastUI.exe
C:\WINDOWS\system32\ctfmon.exe
C:\WINDOWS\system32\netdde.exe
C:\Programmi\a-squared Anti-Dialer\a2service.exe
C:\WINDOWS\System32\svchost.exe
C:\WINDOWS\System32\nvsvc32.exe
C:\Programmi\File comuni\Symantec Shared\SNDSrvc.exe
C:\WINDOWS\System32\svchost.exe
C:\WINDOWS\System32\inetsrv\inetinfo.exe
C:\Programmi\Malwarebytes' Anti-Malware\mbam.exe
C:\Programmi\3COM\3Com Wireless 108 Mbps 11g USB Utility \WlanUI.exe
C:\Documents and Settings\Luisa\Desktop\HiJackThis.exe
C:\WINDOWS\system32\acs.exe

R0 - HKCU\Software\Microsoft\Internet Explorer\Main,Start Page = http://localhost:81/mwopen
R1 - HKLM\Software\Microsoft\Internet Explorer\Main,Default_Page_URL = http://www.iol.it
R0 - HKLM\Software\Microsoft\Internet Explorer\Main,Start Page = about:blank
R1 - HKCU\Software\Microsoft\Windows\CurrentVersion\Internet Settings,ProxyServer = proxy.libero.it:8080
R0 - HKCU\Software\Microsoft\Internet Explorer\Toolbar,LinksFolderName = Collegamenti
O4 - HKLM\..\Run: [avast5] "C:\Programmi\Alwil Software\Avast5\avastUI.exe" /nogui
O4 - HKLM\..\Run: [WlanUI] "C:\Programmi\3COM\3Com Wireless 108 Mbps 11g USB Utility \WlanUI.exe" -nogui
O4 - HKLM\..\Run: [MSConfig] C:\WINDOWS\PCHealth\HelpCtr\Binaries\MSConfig.exe /auto
O4 - HKCU\..\Run: [ctfmon.exe] C:\WINDOWS\system32\ctfmon.exe
O4 - HKUS\S-1-5-19\..\Run: [CTFMON.EXE] C:\WINDOWS\System32\CTFMON.EXE (User 'SERVIZIO LOCALE')
O4 - HKUS\S-1-5-20\..\Run: [CTFMON.EXE] C:\WINDOWS\System32\CTFMON.EXE (User 'SERVIZIO DI RETE')
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')
O6 - HKCU\Software\Policies\Microsoft\Internet Explorer\Restrictions present
O8 - Extra context menu item: E&sporta in Microsoft Excel - res://C:\PROGRA~1\MICROS~2\OFFICE11\EXCEL.EXE/3000
O8 - Extra context menu item: E&xport to Microsoft Excel - res://C:\PROGRA~1\MICROS~2\Office12\EXCEL.EXE/3000
O9 - Extra button: (no name) - {08B0E5C0-4FCB-11CF-AAA5-00401C608501} - C:\Programmi\Java\jre1.5.0_01\bin\npjpi150_01.dll
O9 - Extra 'Tools' menuitem: Sun Java Console - {08B0E5C0-4FCB-11CF-AAA5-00401C608501} - C:\Programmi\Java\jre1.5.0_01\bin\npjpi150_01.dll
O9 - Extra button: Subscribe in Desktop Sidebar - {09FE188B-6E85-479e-9411-51FB2220DF80} - C:\WINDOWS\system32\shdocvw.dll
O9 - Extra 'Tools' menuitem: Subscribe in Desktop Sidebar - {09FE188B-6E85-479e-9411-51FB2220DF80} - C:\WINDOWS\system32\shdocvw.dll
O9 - Extra button: Ricerche - {92780B25-18CC-41C8-B9BE-3C9C571A8263} - C:\PROGRA~1\MICROS~2\OFFICE11\REFIEBAR.DLL
O9 - Extra button: FlashGet - {D6E814A0-E0C5-11d4-8D29-0050BA6940E3} - C:\WINDOWS\system32\shdocvw.dll
O9 - Extra 'Tools' menuitem: &FlashGet - {D6E814A0-E0C5-11d4-8D29-0050BA6940E3} - C:\WINDOWS\system32\shdocvw.dll
O10 - Unknown file in Winsock LSP: c:\windows\system32\nwprovau.dll
O14 - IERESET.INF: START_PAGE_URL=http://www.iol.it
O23 - Service: a-squared Anti-Dialer Service (a2AntiDialer) - Emsi Software GmbH - C:\Programmi\a-squared Anti-Dialer\a2service.exe
O23 - Service: 3Com Configuration Service (ACS) - Unknown owner - C:\WINDOWS\system32\acs.exe
O23 - Service: avast! Antivirus - AVAST Software - C:\Programmi\Alwil Software\Avast5\AvastSvc.exe
O23 - Service: Crypkey License - Kenonic Controls Ltd. - C:\WINDOWS\SYSTEM32\crypserv.exe
O23 - Service: InstallDriver Table Manager (IDriverT) - Macrovision Corporation - C:\Programmi\File comuni\InstallShield\Driver\11\Intel 32\IDriverT.exe
O23 - Service: IMAPI CD-Burning COM Service (ImapiService) - Roxio Inc. - C:\WINDOWS\System32\ImapiRox.exe
O23 - Service: NVIDIA Driver Helper Service (NVSvc) - NVIDIA Corporation - C:\WINDOWS\System32\nvsvc32.exe

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