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Is the file %SysDir%\ACE.DLL located on your computer? Then your computer is infected.
We do suggest you should remove %SysDir%\ACE.DLL from your computer as soon as possible.
%SysDir%\ACE.DLL is Trojan/Backdoor.
Kill the process %SysDir%\ACE.DLL and remove %SysDir%\ACE.DLL from the Windows startup.
%SysDir%\ACE.DLL Information and Removal:
ACE.DLL is known as: Mal_Infostl [Trend Micro] Troj/Lineag-Gen [Sophos] Virus:Win32/Viking.dll.gen!A [Microsoft] Trojan-Dropper.Delf [Ikarus].
MD5 of ACE.DLL = 7642AC61633F67EE072FE88DB8E7D20D
ACE.DLL size is 217088 bytes.
Full path on a computer: %SYSTEM%\ACE.DLL
Related Files:
%TEMP%\$$C1.TMP
%TEMP%\$$C1.TMP.BAT
%PROGRAMFILES%\WINDOWS NT\SERVICES.EXE
%SYSTEM%\ACE.DLL