Avast mi ha rilevato 2 virus che ho eliminato... Uno era una dll di Panda Activescan... mah!
Cmq ora il firewall PC Tools Firewall Free, all'improvviso mi da un errore sul file svchost.exe, sebbene l'abbia autorizzato in fase d'installazione, e da quel momento non riesco più ad aprire alcuna pagina nè a connettere eMule...

Il Beep d'avvio è tornato intanto normale.

L'alternarsi dei problemi mi fa propendere per un surriscaldamento, ma non sono un esperto in hardware...

Questo è il log di HiJackThis con i programmi che tengo abitualmente aperti...

Logfile of HijackThis v1.99.1
Scan saved at 00:09:21, on 24/06/2008
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\svchost.exe
C:\Programmi\PC Tools Firewall Plus\FWService.exe
C:\WINDOWS\System32\svchost.exe
C:\WINDOWS\system32\spoolsv.exe
C:\WINDOWS\Explorer.EXE
C:\WINDOWS\system32\VTTimer.exe
C:\WINDOWS\system32\S3Trayp.exe
C:\WINDOWS\RTHDCPL.EXE
C:\WINDOWS\system32\rundll32.exe
C:\Programmi\Unlocker\UnlockerAssistant.exe
C:\PROGRA~1\ALWILS~1\Avast4\ashDisp.exe
C:\Programmi\PC Tools Firewall Plus\FirewallGUI.exe
C:\WINDOWS\system32\ctfmon.exe
C:\Programmi\html2pop3232win32\html2pop3.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\Alwil Software\Avast4\ashMaiSv.exe
C:\Programmi\Alwil Software\Avast4\ashWebSv.exe
C:\Programmi\Mozilla Firefox\firefox.exe
C:\WINDOWS\system32\wuauclt.exe
C:\Programmi\eMule\emule.exe
C:\Documents and Settings\Gas\Documenti\My Downloads\HijackThis\HijackThis.exe

R1 - HKCU\Software\Microsoft\Windows\CurrentVersion\Int ernet Settings,ProxyOverride = 127.0.0.1
R0 - HKCU\Software\Microsoft\Internet Explorer\Toolbar,LinksFolderName = Collegamenti
O2 - BHO: Adobe PDF Reader Link Helper - {06849E9F-C8D7-4D59-B87D-784B7D6BE0B3} - C:\Programmi\File comuni\Adobe\Acrobat\ActiveX\AcroIEHelper.dll
O2 - BHO: SSVHelper Class - {761497BB-D6F0-462C-B6EB-D4DAF1D92D43} - C:\Programmi\Java\jre1.6.0_05\bin\ssv.dll
O4 - HKLM\..\Run: [VTTimer] VTTimer.exe
O4 - HKLM\..\Run: [S3Trayp] S3Trayp.exe
O4 - HKLM\..\Run: [SkyTel] SkyTel.EXE
O4 - HKLM\..\Run: [RTHDCPL] RTHDCPL.EXE
O4 - HKLM\..\Run: [AdslTaskBar] rundll32.exe stmctrl.dll,TaskBar
O4 - HKLM\..\Run: [UnlockerAssistant] "C:\Programmi\Unlocker\UnlockerAssistant.exe" -H
O4 - HKLM\..\Run: [avast!] C:\PROGRA~1\ALWILS~1\Avast4\ashDisp.exe
O4 - HKLM\..\Run: [00PCTFW] "C:\Programmi\PC Tools Firewall Plus\FirewallGUI.exe" -s
O4 - HKCU\..\Run: [CTFMON.EXE] C:\WINDOWS\system32\ctfmon.exe
O4 - Startup: html2pop3.lnk = C:\Programmi\html2pop3232win32\html2pop3.exe
O8 - Extra context menu item: E&sporta in Microsoft Excel - res://C:\PROGRA~1\MICROS~2\OFFICE11\EXCEL.EXE/3000
O16 - DPF: {2D8ED06D-3C30-438B-96AE-4D110FDC1FB8} (ActiveScan 2.0 Installer Class) - http://acs.pandasoftware.com/actives.../as2stubie.cab
O17 - HKLM\System\CCS\Services\Tcpip\..\{0CB61D50-A02F-45DB-9046-2C0A4FBB65B2}: NameServer = 85.37.17.49 85.38.28.91
O23 - Service: avast! iAVS4 Control Service (aswUpdSv) - ALWIL Software - C:\Programmi\Alwil Software\Avast4\aswUpdSv.exe
O23 - Service: avast! Antivirus - ALWIL Software - 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: PC Tools Firewall Plus (PCToolsFirewallPlus) - PC Tools - C:\Programmi\PC Tools Firewall Plus\FWService.exe

Aggiungo che nello scaricare i vari programmi di diagnosi e sicurezza, spesso la velocità era misera: 4-6kb/s con Alice 7 Mega! Annullando e riprovando, riuscivo a realizzare una velocità decente (200kb/s).