iexplor2.dll is a mass-mailing worm W32.Tame-C. iexplor2.dll tries to terminate antiviral programs installed on a user computer. Related files: %System%\lsa2srv.exe %System%\service.exe %System%\sysmng.exe %System%\systm.exe %System%\hserv.sys %System%\iexplor.dll %System%\iexplor2.dll %System%\netdx.dat %System%\version.ini More info: http://www.sophos.com/virusinfo/analyses... Removal: Remove iexplor2.dll from Windows startup using antivirus (also check How To Remove section)Startup Optimizer.