Hey,
I've just downloaded the 1.2.1 files and installed them on a test board, and Nod32 (v5.0.93.0) has kept entirely quiet. Could you provide a screenshot of the virus popup Nod32 gives when you're attempting to access your site?
Also, you may want to check your FTP access logs to ensure nobody has uploaded infected files without your knowledge.
In addition, if you didn't get the files from
www.DragonByte-Tech.com or from this thread, then it's possible the user that uploaded the files has attached viruses to them.
Finally, you may want to run a deep scan of your computer just to make sure it's not a virus that's hiding in sections of the OS that Nod's live protection don't normally scan.
Fillip