Months after uninstalling Norton Systems works, numerous Symantec folders remained on the computer. I think I have most of those fixed by now. However, there is a remaining dll which is creating persistent and annoying error messages when some applications are loaded. The message is "an unstable virtual device driver failed" The referred to dll remaining on windows system32 is "s32EVNT1.dll" Does anyone know if this can safely be removed by simply deleting it? I don't know how to tell if this is necessary or shared by any other applications. The dll properties are: Symantec, file version 18.104.22.168 Thanks for any help.