About a month ago I switched from Windows 2000 to Slackware. I noticed in my research that most people believe that an antivirus program is unnecessary when running linux. I understand that the default settings for linux are more secure than the Windows defaults if you run as a user. There also seem to be far fewer viruses for linux. But if I do happen to get a virus, how will I know I have one if I am not running an antivirus program? Maybe I am just being a little paranoid but with Windows it was always an issue.