It is not that antivirus programs do not detect many viruses, but the fact that most users do not use any antivirus program at all. ALWIL Software, the producer of Avast! Antivrus, decided to help solve this situation by offering Avast! Home Edition free of charge for home users who do not use their computer for profit. To get industry leading antivirus protection for your home PC, download the software from here, and then register it.