I have said it many times but noone believes, MSE is one of the worse antivirus programs out there! Yes it is light on resources but it sucks big time in protection! I have had 2 viruses crawl twice on to my system even though I am a safe user. Furthermore, it sucks in deleting any threats AV-TEST - The Independent IT-Security Institute: Jul/Aug 2012 Avast! Free Antivirus FTW!