Mpgcom.dll is an adware program Adware.Mpgcom. Mpgcom.dll monitors user Internet activity and private information. It sends stolen data to a hacker site. Related files: %Windir%\mpgcom.dll %Windir%\msnarrator.exe Adds the value: "msnarrator" = "%Windir%\msnarrator.exe" to the Windows startup registry keys. More info: http://securityresponse.symantec.com/avc... Removal: Remove mpgcom.dll from Windows startup using antivirus (also check How To Remove section)Startup Optimizer.