http://www.theregister.co.uk/2005/04/27/security_for_the_paranoid/ ###edit### talking about paranoia: what do you think, is one antivirus enough? I mean I guess I could add another free av scanner fater clamav...
Normally ClamAV finds all viruses. I've had one or two cases when ClamAV did not find the virus (maybe it was too new), but fortunately I had another virus scanner after ClamAV. But you have to keep in mind that another virus scanner will increase the system load, especially on a system with heavy email traffic.