Ciao al forum.
Visto l'efficienza riscontrata in passato sottopongo il probelma virus riscontrato di recente...
allego Logfile di HijackThis v2.0.2

Grazie in anticipo

Scan saved at 11.00.41, on 18/11/2008
Platform: Windows XP SP1 (WinNT 5.01.2600)
MSIE: Internet Explorer v6.00 SP1 (6.00.2800.1106)
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\spoolsv.exe
C:\Programmi\AntiVir PersonalEdition Classic\sched.exe
C:\Programmi\AntiVir PersonalEdition Classic\avguard.exe
C:\WINDOWS\System32\dllhost.exe
C:\WINDOWS\System32\mgabg.exe
C:\WINDOWS\System32\svchost.exe
C:\WINDOWS\Explorer.EXE
C:\Programmi\Java\j2re1.4.2_03\bin\jusched.exe
C:\Programmi\HP\HP Software Update\HPWuSchd2.exe
C:\Programmi\HP\hpcoretech\hpcmpmgr.exe
C:\Programmi\AntiVir PersonalEdition Classic\avgnt.exe
C:\WINDOWS\System32\PDesk\PDesk.exe
C:\WINDOWS\System32\ctfmon.exe
C:\Programmi\Save\Save.exe
C:\Programmi\HP\Digital Imaging\bin\hpqgalry.exe
C:\Programmi\Internet Explorer\IEXPLORE.EXE
C:\Programmi\Mozilla Firefox\firefox.exe
C:\Programmi\Trend Micro\HijackThis\HijackThis.exe

R1 - HKCU\Software\Microsoft\Internet Explorer\Main,Search Page = file://c:/windows/homepage.html
R0 - HKCU\Software\Microsoft\Internet Explorer\Main,Start Page = file://c:/windows/homepage.html
R0 - HKCU\Software\Microsoft\Internet Explorer\Toolbar,LinksFolderName =
O3 - Toolbar: &Radio - {8E718888-423F-11D2-876E-00A0C9082467} - C:\WINDOWS\System32\msdxm.ocx
O3 - Toolbar: Yahoo! Toolbar - {EF99BD32-C1FB-11D2-892F-0090271D4F88} - C:\Programmi\Yahoo!\Companion\Installs\cpn\yt.dll
O4 - HKLM\..\Run: [SunJavaUpdateSched] C:\Programmi\Java\j2re1.4.2_03\bin\jusched.exe
O4 - HKLM\..\Run: [HP Software Update] "C:\Programmi\HP\HP Software Update\HPWuSchd2.exe"
O4 - HKLM\..\Run: [HP Component Manager] "C:\Programmi\HP\hpcoretech\hpcmpmgr.exe"
O4 - HKLM\..\Run: [avgnt] "C:\Programmi\AntiVir PersonalEdition Classic\avgnt.exe" /min
O4 - HKLM\..\Run: [Matrox Powerdesk] C:\WINDOWS\System32\PDesk\PDesk.exe /Autolaunch
O4 - HKCU\..\Run: [CTFMON.EXE] C:\WINDOWS\System32\ctfmon.exe
O4 - HKCU\..\Run: [updateMgr] "C:\Programmi\Adobe\Acrobat 7.0\Reader\AdobeUpdateManager.exe" AcRdB7_0_9 -reboot 1
O4 - HKCU\..\Run: [WhenUSave] "C:\Programmi\Save\Save.exe"
O4 - HKUS\S-1-5-19\..\Run: [CTFMON.EXE] C:\WINDOWS\System32\CTFMON.EXE (User 'SERVIZIO LOCALE')
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')
O4 - Global Startup: Microsoft Office.lnk = C:\Programmi\Microsoft Office\Office10\OSA.EXE
O4 - Global Startup: Avvio rapido di HP Image Zone.lnk = C:\Programmi\HP\Digital Imaging\bin\hpqthb08.exe
O4 - Global Startup: HP Digital Imaging Monitor.lnk = C:\Programmi\HP\Digital Imaging\bin\hpqtra08.exe
O4 - Global Startup: Avvio veloce di Adobe Reader.lnk = C:\Programmi\Adobe\Acrobat 7.0\Reader\reader_sl.exe
O8 - Extra context menu item: &Search - http://kc.bar.need2find.com/KC/menusearch.html?p=KC
O8 - Extra context menu item: E&sporta in Microsoft Excel - res://C:\PROGRA~1\MICROS~2\Office10\EXCEL.EXE/3000
O9 - Extra button: (no name) - {08B0E5C0-4FCB-11CF-AAA5-00401C608501} - C:\WINDOWS\System32\msjava.dll
O9 - Extra 'Tools' menuitem: Sun Java Console - {08B0E5C0-4FCB-11CF-AAA5-00401C608501} - C:\WINDOWS\System32\msjava.dll
O9 - Extra button: (no name) - {DFB852A3-47F8-48C4-A200-58CAB36FD2A2} - C:\PROGRA~1\SPYBOT~1\SDHelper.dll
O9 - Extra 'Tools' menuitem: Spybot - Search & Destroy Configuration - {DFB852A3-47F8-48C4-A200-58CAB36FD2A2} - C:\PROGRA~1\SPYBOT~1\SDHelper.dll
O16 - DPF: {6414512B-B978-451D-A0D8-FCFDF33E833C} (WUWebControl Class) - http://www.update.microsoft.com/wind...?1225031893096
O16 - DPF: {7F8B1F27-AE54-479D-AACF-0A7B2334E7EE} (HTTPUplListX Control) - http://stampafoto.mediaworld.it/HTTPUplList.cab
O17 - HKLM\System\CCS\Services\Tcpip\..\{D7714BE1-BC87-40FE-AD71-CA0E5A621CFF}: NameServer = 212.216.112.112,212.216.172.62
O20 - AppInit_DLLs: mldfxm.dll pyqvja.dll oohqwd.dll mrjcxv.dll mikjfo.dll
O23 - Service: AntiVir Scheduler (AntiVirScheduler) - Avira GmbH - C:\Programmi\AntiVir PersonalEdition Classic\sched.exe
O23 - Service: AntiVir PersonalEdition Classic Service (AntiVirService) - Avira GmbH - C:\Programmi\AntiVir PersonalEdition Classic\avguard.exe
O23 - Service: Microsoft ASPI Manager (aspimgr) - Unknown owner - C:\WINDOWS\System32\aspimgr.exe (file missing)
O23 - Service: MGABGEXE - Matrox Graphics Inc. - C:\WINDOWS\System32\mgabg.exe