potete controllare il mio log?
non dovrebbero esserci malware, ma secondo me servizi inutili o altro sì..grazie..

Logfile of HijackThis v1.99.1
Scan saved at 18.46.44, on 14/01/2010
Platform: Unknown Windows (WinNT 6.00.1906 SP2)
MSIE: Internet Explorer v7.00 (7.00.6002.18005)

Running processes:
C:\Windows\system32\taskeng.exe
C:\Windows\system32\Dwm.exe
C:\Windows\Explorer.EXE
C:\Program Files\Avira\AntiVir Desktop\avgnt.exe
C:\Windows\System32\hkcmd.exe
C:\Windows\System32\igfxpers.exe
C:\Program Files\Toshiba\Bluetooth Toshiba Stack\TosBtMng.exe
C:\Program Files\Toshiba\Bluetooth Toshiba Stack\TosA2dp.exe
C:\Program Files\Toshiba\Bluetooth Toshiba Stack\TosBtHid.exe
C:\Program Files\Toshiba\Bluetooth Toshiba Stack\TosBtHsp.exe
C:\Program Files\Toshiba\Bluetooth Toshiba Stack\TosAVRC.exe
C:\Program Files\Toshiba\Bluetooth Toshiba Stack\tosOBEX.exe
C:\Program Files\Toshiba\Bluetooth Toshiba Stack\TosBtProc.exe
C:\Program Files\Internet Explorer\iexplore.exe
C:\Program Files\HijackThis.exe

R1 - HKCU\Software\Microsoft\Internet Explorer\Main,Search Page = http://go.microsoft.com/fwlink/?LinkId=54896
R0 - HKCU\Software\Microsoft\Internet Explorer\Main,Start Page = http://www.libero.it/
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 - HKCU\Software\Microsoft\Internet Explorer\Toolbar,LinksFolderName =
O1 - Hosts: ::1 localhost
O2 - BHO: AcroIEHelperStub - {18DF081C-E8AD-4283-A596-FA578C2EBDC3} - C:\Program Files\Common Files\Adobe\Acrobat\ActiveX\AcroIEHelperShim.dll
O4 - HKLM\..\Run: [avgnt] "C:\Program Files\Avira\AntiVir Desktop\avgnt.exe" /min
O4 - HKLM\..\Run: [Adobe Reader Speed Launcher] "C:\Program Files\Adobe\Reader 9.0\Reader\Reader_sl.exe"
O4 - HKLM\..\Run: [Adobe ARM] "C:\Program Files\Common Files\Adobe\ARM\1.0\AdobeARM.exe"
O4 - HKLM\..\Run: [IgfxTray] C:\Windows\system32\igfxtray.exe
O4 - HKLM\..\Run: [HotKeysCmds] C:\Windows\system32\hkcmd.exe
O4 - HKLM\..\Run: [Persistence] C:\Windows\system32\igfxpers.exe
O4 - Global Startup: Bluetooth Manager.lnk = ?
O9 - Extra button: Ricerche - {92780B25-18CC-41C8-B9BE-3C9C571A8263} - C:\PROGRA~1\MICROS~2\OFFICE11\REFIEBAR.DLL
O10 - Unknown file in Winsock LSP: c:\windows\system32\nlaapi.dll
O10 - Unknown file in Winsock LSP: c:\windows\system32\napinsp.dll
O10 - Unknown file in Winsock LSP: c:\program files\avira\antivir desktop\avsda.dll
O10 - Unknown file in Winsock LSP: c:\program files\avira\antivir desktop\avsda.dll
O10 - Unknown file in Winsock LSP: c:\program files\avira\antivir desktop\avsda.dll
O11 - Options group: [INTERNATIONAL] International*
O13 - Gopher Prefix:
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
O16 - DPF: {EF791A6B-FC12-4C68-99EF-FB9E207A39E6} (McFreeScan Class) - http://download.mcafee.com/molbin/iss-loc/mcfscan/2,2,0,5840/mcfscan.cab
O17 - HKLM\System\CCS\Services\Tcpip\..\{5E1B4848-97DE-4477-8BBB-739A6B2F8F73}: NameServer = 212.216.112.112,212.216.172.222
O20 - Winlogon Notify: igfxcui - C:\Windows\SYSTEM32\igfxdev.dll
O23 - Service: Avira AntiVir MailGuard (AntiVirMailService) - Avira GmbH - C:\Program Files\Avira\AntiVir Desktop\avmailc.exe
O23 - Service: Avira AntiVir Scheduler (AntiVirSchedulerService) - Avira GmbH - C:\Program Files\Avira\AntiVir Desktop\sched.exe
O23 - Service: Avira AntiVir Guard (AntiVirService) - Avira GmbH - C:\Program Files\Avira\AntiVir Desktop\avguard.exe
O23 - Service: Avira AntiVir WebGuard (AntiVirWebService) - Avira GmbH - C:\Program Files\Avira\AntiVir Desktop\AVWEBGRD.EXE
O23 - Service: @%SystemRoot%\ehome\ehstart.dll,-101 (ehstart) - Unknown owner - %windir%\system32\svchost.exe (file missing)
O23 - Service: @gpapi.dll,-112 (gpsvc) - Unknown owner - %windir%\system32\svchost.exe (file missing)
O23 - Service: NMSAccessU - Unknown owner - C:\Program Files\CDBurnerXP\NMSAccessU.exe
O23 - Service: @%SystemRoot%\system32\qwave.dll,-1 (QWAVE) - Unknown owner - %windir%\system32\svchost.exe (file missing)
O23 - Service: @%SystemRoot%\system32\seclogon.dll,-7001 (seclogon) - Unknown owner - %windir%\system32\svchost.exe (file missing)
O23 - Service: TOSHIBA Bluetooth Service - TOSHIBA CORPORATION - C:\Program Files\Toshiba\Bluetooth Toshiba Stack\TosBtSrv.exe
O23 - Service: @%ProgramFiles%\Windows Media Player\wmpnetwk.exe,-101 (WMPNetworkSvc) - Unknown owner - %ProgramFiles%\Windows Media Player\wmpnetwk.exe (file missing)

Hai un bel casino
scarica l'ultima versione di HJT e riposta il log fatto in modalità normale=)
http://www.aiutamici.com/software?ID=11175

Scherzavo =)

Aspetta.

Segui ovviamente il consiglio di bazzurlone.