ciao...
ho lo stesso problema con Windows live messenger..
quando lo avvio, mi appare l'errore dell'applicazione wlcomm.exe, e il modname è cvasds0.dll
ho fatto una scansione del pc con Clam Win antivirus, poi ho fatto la scansione con HijackThis, e questo è il log:

Logfile of Trend Micro HijackThis v2.0.2
Scan saved at 11.28.02, on 07/11/2009
Platform: Windows XP SP2 (WinNT 5.01.2600)
MSIE: Internet Explorer v8.00 SP2 (8.00.6001.18372)
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\WIDCOMM\Bluetooth Software\bin\btwdins.exe
C:\WINDOWS\system32\spoolsv.exe
C:\WINDOWS\system32\agrsmsvc.exe
C:\WINDOWS\system32\cisvc.exe
C:\Programmi\File comuni\Microsoft Shared\VS7DEBUG\MDM.EXE
C:\Programmi\PDF Complete\pdfsvc.exe
C:\Programmi\Alcohol Soft\Alcohol 120\StarWind\StarWindServiceAE.exe
C:\WINDOWS\system32\svchost.exe
C:\WINDOWS\Explorer.EXE
C:\WINDOWS\system32\ctfmon.exe
C:\Programmi\Messenger\msmsgs.exe
C:\Programmi\RocketDock\RocketDock.exe
C:\Programmi\Mozilla Firefox\firefox.exe
C:\WINDOWS\system32\cidaemon.exe
C:\Programmi\Trend Micro\HijackThis\HijackThis.exe

O2 - BHO: (no name) - {5C255C8A-E604-49b4-9D64-90988571CECB} - (no file)
O4 - HKCU\..\Run: [ctfmon.exe] C:\WINDOWS\system32\ctfmon.exe
O4 - HKCU\..\Run: [MSMSGS] "C:\Programmi\Messenger\msmsgs.exe" /background
O4 - HKCU\..\Run: [MsnMsgr] "C:\Programmi\Windows Live\Messenger\MsnMsgr.Exe" /background
O4 - HKCU\..\Run: [RocketDock] "C:\Programmi\RocketDock\RocketDock.exe"
O9 - Extra button: Inserisci blog - {219C3416-8CB2-491a-A3C7-D9FCDDC9D600} - C:\Programmi\Windows Live\Writer\WriterBrowserExtension.dll
O9 - Extra 'Tools' menuitem: Inserisci &blog in Windows Live Writer - {219C3416-8CB2-491a-A3C7-D9FCDDC9D600} - C:\Programmi\Windows Live\Writer\WriterBrowserExtension.dll
O23 - Service: Agere Modem Call Progress Audio (AgereModemAudio) - Agere Systems - C:\WINDOWS\system32\agrsmsvc.exe
O23 - Service: Bluetooth Service (btwdins) - Broadcom Corporation. - C:\Programmi\WIDCOMM\Bluetooth Software\bin\btwdins.exe
O23 - Service: Controllo/blocco dispositivi HP ProtectTools (FLCDLOCK) - Hewlett-Packard Ltd - C:\WINDOWS\system32\flcdlock.exe
O23 - Service: PDF Document Manager (pdfcDispatcher) - PDF Complete Inc - C:\Programmi\PDF Complete\pdfsvc.exe
O23 - Service: StarWind AE Service (StarWindServiceAE) - Rocket Division Software - C:\Programmi\Alcohol Soft\Alcohol 120\StarWind\StarWindServiceAE.exe

--
End of file - 2388 bytes


Sono disperato ditemi cosa devo fare grazie in anticipo.....^^