I am a new user of Nod32. So I don't know how often Nod updates its virus base or / and its engine. Today I update it. Then I test it with trojan package downloaded from astalavista. http://www.xxxxxxxxxxxxxxxxxxxxxxxx.com BTW: My opinion is top AV such as Nod should be top AT. These trojan file are : osirisv2.zip,PESTv1.zip, Mantice_Client-Server.rar,IntruzzoEng.zip,D4v3'5.ZIP Nod only detects Mantice Kaspersky and Drweb detect all f-prot(for dos): none.