TREEROD  - - Update - - Virex version 7.2 sort-of runs on Mac OSX 10.5.5. I can no longer run Virex for a large number of files; after scanning for a while, Virex suddenly crashes. For instance if I try to scan the Library folder, it'll crash after scanning almost a thousand files. However, if I scan just one of the sub-folders of Library, then Virex seems to work fine. It still scans downloaded files just fine.

So, for Leopard, Virex now just hobbles along.   
(Version 10/01/08)

TREEROD  Virex Version 7.2 still works with my new Intel iMac running OS X 10.5.5. So, as far as I'm concerned, the advice from some 3 years ago to stay with Virex 7.2, still stands.  
(Version 09/17/08)

TREEROD  I've used this piece of software during a recent maintenance of my client's workstations. Out of nine workstations, low and behold I did get one positive hit. I did a little research and background check and discovered the file name was "Macvideo." The user admitted to "visiting" the MacMiniHack website, and the site was loaded with messages that had links to porn sites. He clicked on one of the links and it downloaded a "Codec" which said he needed this file to view the video files. Unfortunately, the person was also the business owner who has admin privileges and oh yea, he entered the password.  
(Version 1.0)