i'm using windows xp media center sp3 and avg anti virus. some days ago avg detected two viruses and moved the files to the virus vault and forced a restart. the virus vault now: Resident Shield detection Infection;"Object";"Result";"Detection time";"Object Type";"Process" Trojan horse BackDoor.Generic10.TDZ;"C:\i386\wupdmgr.exe";"Moved to Virus Vault";"24.10.2008, 12:20:01";"file";"C:\WINDOWS\system32\winlogon.exe" Virus identified Win32/Patched.S;"C:\windows\system32\sens.dll";"Moved to Virus Vault";"31.10.2008, 13:20:38";"file";"C:\WINDOWS\System32\svchost.exe" Virus identified EICAR_Test;"C:\DOKUME~1\kristin\LOKALE~1\Temp\Av-test.txt";"Moved to Virus Vault";"31.10.2008, 14:24:18";"file";"C:\WINDOWS\system32\CF9318.exe" the current user by that time checked out some forums but didn't ask for help. he came across combofix and just downloaded it to some folder and ran it without having read the 'how to' instructions it seemed like everything worked out well but now i'm unsure whether this was enough. plus my computer is running slower than ever and the avg automatic update won't work. could someone have a look at this? please tell me if i need to do more or if the other guy may have accidently uninstalled important stuff. i attached the combofix log as well.