salve gente vorrei un'aiuto perchè il mio antivirus non mi fa aggiornare cioè ogni volta che va in aggiornamento (automatico) mi dice che i file sono obsoleti.. anche se aggiorno manualmente sempre la stessa cosa.. se perfavore mi date un'occhiata ai seguenti log di HijackThis e di malwarebites.. grazie

Logfile of Trend Micro HijackThis v2.0.2
Scan saved at 14.24.27, on 21/05/2009
Platform: Windows XP SP2 (WinNT 5.01.2600)
MSIE: Internet Explorer v7.00 (7.00.6000.16473)
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:\WINDOWS\system32\svchost.exe
C:\WINDOWS\system32\spoolsv.exe
C:\WINDOWS\Explorer.EXE
C:\Programmi\SweetIM\Messenger\SweetIM.exe
C:\WINDOWS\system32\nvsvc32.exe
C:\WINDOWS\system32\ctfmon.exe
C:\WINDOWS\System32\PAStiSvc.exe
C:\WINDOWS\system32\svchost.exe
C:\WINDOWS\system32\fxssvc.exe
C:\WINDOWS\system32\wscntfy.exe
C:\Documents and Settings\Luigi\Dati applicazioni\U3\17400311A1034039\LaunchPad.exe
C:\Documents and Settings\Luigi\Dati applicazioni\U3\17400311A1034039\285E6953-BF3C-4445-9376-3FE5D7F645B2\Exec\bin\SignupShield.exe
C:\Programmi\Windows Live\Messenger\msnmsgr.exe
C:\Programmi\Windows Live\Contacts\wlcomm.exe
C:\Programmi\Internet Explorer\iexplore.exe
I:\Documents\peak_4\progammi\HijackThis.exe

R0 - HKCU\Software\Microsoft\Internet Explorer\Main,Start Page = about:blank
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://home.sweetim.com
R0 - HKLM\Software\Microsoft\Internet Explorer\Search,SearchAssistant =
R0 - HKCU\Software\Microsoft\Internet Explorer\Main,Local Page =
R0 - HKLM\Software\Microsoft\Internet Explorer\Main,Local Page =
R1 - HKCU\Software\Microsoft\Internet Explorer\Main,Window Title = Microsoft Internet Explorer fornito da Alice
R0 - HKCU\Software\Microsoft\Internet Explorer\Toolbar,LinksFolderName = Collegamenti
O2 - BHO: AcroIEHelperStub - {18DF081C-E8AD-4283-A596-FA578C2EBDC3} - C:\Programmi\File comuni\Adobe\Acrobat\ActiveX\AcroIEHelperShim.dll
O2 - BHO: Skype add-on (mastermind) - {22BF413B-C6D2-4d91-82A9-A0F997BA588C} - C:\Programmi\Skype\Toolbars\Internet Explorer\SkypeIEPlugin.dll
O2 - BHO: IEVkbdBHO - {59273AB4-E7D3-40F9-A1A8-6FA9CCA1862C} - C:\Programmi\Kaspersky Lab\Kaspersky Anti-Virus 2009\ievkbd.dll
O2 - BHO: (no name) - {5C255C8A-E604-49b4-9D64-90988571CECB} - (no file)
O2 - BHO: SSVHelper Class - {761497BB-D6F0-462C-B6EB-D4DAF1D92D43} - C:\Programmi\Java\jre1.5.0_09\bin\ssv.dll
O2 - BHO: Guida per l'accesso a Windows Live - {9030D464-4C02-4ABF-8ECC-5164760863C6} - C:\Programmi\File comuni\Microsoft Shared\Windows Live\WindowsLiveLogin.dll
O4 - HKLM\..\Run: [NvCplDaemon] RUNDLL32.EXE C:\WINDOWS\system32\NvCpl.dll,NvStartup
O4 - HKLM\..\Run: [QuickTime Task] "C:\Programmi\QuickTime\qttask.exe" -atboottime
O4 - HKLM\..\Run: [AVP] "C:\Programmi\Kaspersky Lab\Kaspersky Anti-Virus 2009\avp.exe"
O4 - HKLM\..\Run: [SweetIM] C:\Programmi\SweetIM\Messenger\SweetIM.exe
O4 - HKLM\..\Run: [Adobe Reader Speed Launcher] "C:\Programmi\Adobe\Reader 9.0\Reader\Reader_sl.exe"
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')
O8 - Extra context menu item: E&sporta in Microsoft Excel - res://C:\PROGRA~1\MICROS~2\OFFICE11\EXCEL.EXE/3000
O9 - Extra button: (no name) - {08B0E5C0-4FCB-11CF-AAA5-00401C608501} - C:\Programmi\Java\jre1.5.0_09\bin\ssv.dll
O9 - Extra 'Tools' menuitem: Sun Java Console - {08B0E5C0-4FCB-11CF-AAA5-00401C608501} - C:\Programmi\Java\jre1.5.0_09\bin\ssv.dll
O9 - Extra button: Statistiche sulla protezione del traffico Web - {1F460357-8A94-4D71-9CA3-AA4ACF32ED8E} - C:\Programmi\Kaspersky Lab\Kaspersky Anti-Virus 2009\SCIEPlgn.dll
O9 - Extra button: Skype - {77BF5300-1474-4EC7-9980-D32B190E9B07} - C:\Programmi\Skype\Toolbars\Internet Explorer\SkypeIEPlugin.dll
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
O16 - DPF: CabBuilder - http://kiw.imgag.com/imgag/kiw/toolbar/download/InstallerControl.cab
O16 - DPF: Iphona - http://www.inps.it/Servizi/ParlaConNoi/VoipFiles/Iphona.CAB
O16 - DPF: {0CCA191D-13A6-4E29-B746-314DEE697D83} (Facebook Photo Uploader 5 Control) - http://upload.facebook.com/controls/2008.10.10_v5.5.8/FacebookPhotoUploader5.cab
O16 - DPF: {20A60F0D-9AFA-4515-A0FD-83BD84642501} (Checkers Class) - http://messenger.zone.msn.com/binary/msgrchkr.cab56986.cab
O16 - DPF: {4F1E5B1A-2A80-42CA-8532-2D05CB959537} (MSN Photo Upload Tool) - http://gfx2.hotmail.com/mail/w3/resources/MSNPUpld.cab
O16 - DPF: {5D6F45B3-9043-443D-A792-115447494D24} (UnoCtrl Class) - http://messenger.zone.msn.com/IT-IT/a-UNO1/GAME_UNO1.cab
O16 - DPF: {6414512B-B978-451D-A0D8-FCFDF33E833C} (WUWebControl Class) - http://update.microsoft.com/microsoftupdate/v6/V5Controls/en/x86/client/wuweb_site.cab?1172137815015
O16 - DPF: {6E32070A-766D-4EE6-879C-DC1FA91D2FC3} (MUWebControl Class) - http://update.microsoft.com/microsoftupdate/v6/V5Controls/en/x86/client/muweb_site.cab?1172137800625
O16 - DPF: {BD8667B7-38D8-4C77-B580-18C3E146372C} (Creative Toolbox Plug-in) - http://kiw.imgag.com/imgag/cp/install/crusher-kiwen.cab
O16 - DPF: {C3F79A2B-B9B4-4A66-B012-3EE46475B072} (MessengerStatsClient Class) - http://messenger.zone.msn.com/binary/MessengerStatsPAClient.cab56907.cab
O16 - DPF: {CF40ACC5-E1BB-4AFF-AC72-04C2F616BCA7} (get_atlcom Class) - http://wwwimages.adobe.com/www.adobe.com/products/acrobat/nos/gp.cab
O16 - DPF: {D27CDB6E-AE6D-11CF-96B8-444553540000} (Shockwave Flash Object) - http://fpdownload2.macromedia.com/get/shockwave/cabs/flash/swflash.cab
O16 - DPF: {F5A7706B-B9C0-4C89-A715-7A0C6B05DD48} (Minesweeper Flags Class) - http://messenger.zone.msn.com/binary/MineSweeper.cab56986.cab
O17 - HKLM\System\CCS\Services\Tcpip\..\{D2BF706A-55A0-4D6F-BEC2-431C952699A1}: NameServer = 85.37.17.51 85.38.28.97
O18 - Protocol: skype4com - {FFC8B962-9B40-4DFF-9458-1830C7DD7F5D} - C:\PROGRA~1\FILECO~1\Skype\SKYPE4~1.DLL
O20 - AppInit_DLLs: C:\PROGRA~1\KASPER~1\KASPER~2\mzvkbd.dll,C:\PROGRA~1\KASPER~1\KASPER~2\mzvkbd3.dll
O23 - Service: Anp.adkxilrt - Advanced Micro Devices - (no file)
O23 - Service: Kaspersky Anti-Virus (AVP) - Kaspersky Lab - C:\Programmi\Kaspersky Lab\Kaspersky Anti-Virus 2009\avp.exe
O23 - Service: getPlus(R) Helper - NOS Microsystems Ltd. - C:\Programmi\NOS\bin\getPlus_HelperSvc.exe
O23 - Service: Google Updater Service (gusvc) - Google - C:\Programmi\Google\Common\Google Updater\GoogleUpdaterService.exe
O23 - Service: NVIDIA Display Driver Service (NVSvc) - NVIDIA Corporation - C:\WINDOWS\system32\nvsvc32.exe
O23 - Service: STI Simulator - Unknown owner - C:\WINDOWS\System32\PAStiSvc.exe

--
End of file - 7379 bytes







Malwarebytes' Anti-Malware 1.34
Versione del database: 1880
Windows 5.1.2600 Service Pack 2

21/05/2009 13.55.39
mbam-log-2009-05-21 (13-55-39).txt

Tipo di scansione: Scansione completa (A:\|C:\|D:\|E:\|F:\|G:\|)
Elementi scansionati: 207633
Tempo trascorso: 28 minute(s), 52 second(s)

Processi delle memoria infetti: 0
Moduli della memoria infetti: 0
Chiavi di registro infette: 1
Valori di registro infetti: 0
Elementi dato del registro infetti: 3
Cartelle infette: 0
File infetti: 0

Processi delle memoria infetti:
(Nessun elemento malevolo rilevato)

Moduli della memoria infetti:
(Nessun elemento malevolo rilevato)

Chiavi di registro infette:
HKEY_CURRENT_USER\SOFTWARE\fcn (Rogue.Residue) -> Quarantined and deleted successfully.

Valori di registro infetti:
(Nessun elemento malevolo rilevato)

Elementi dato del registro infetti:
HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\Security Center\AntiVirusDisableNotify (Disabled.SecurityCenter) -> Bad: (1) Good: (0) -> Quarantined and deleted successfully.
HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\Security Center\FirewallDisableNotify (Disabled.SecurityCenter) -> Bad: (1) Good: (0) -> Quarantined and deleted successfully.
HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\Security Center\UpdatesDisableNotify (Disabled.SecurityCenter) -> Bad: (1) Good: (0) -> Quarantined and deleted successfully.

Cartelle infette:
(Nessun elemento malevolo rilevato)

File infetti:
(Nessun elemento malevolo rilevato)

ciao

finito lo scan con malwarebyte's per eliminare quanto trovato devi cliccare su "rimuovi selezionati"

con hijackthis metti la spunta a queste voci e premi su fix checked:
O2 - BHO: (no name) - {5C255C8A-E604-49b4-9D64-90988571CECB} - (no file)
R0 - HKLM\Software\Microsoft\Internet Explorer\Main,Start Page = http://home.sweetim.com
O23 - Service: Anp.adkxilrt - Advanced Micro Devices - (no file)

ti consiglierei anche di disintallare la toolbar SweetIm
Installare il SP3

e dare una ripulita a cookie,cache e prefetch con Ccleaner
(Quando lo installi ricordati che se lasci le spunte di defaut ,verrà installata anche la toolbar yahoo)
(prima di usarlo vai in Opzioni/avanzate e togli la spunta da :Elimina file temp di Windows solo se piu vecchi di 48 ore)

siuro che l'ora e la data del sistema siano ok?

potrebbe anche essere che non dipenda da te, ma al limite prova a reinstallare il programma