This morning I installed NOD32 V10 over V9 on a Windows 10 system with all available updates installed.  I let the initial scan run to completion, watching the paths of the files it was scanning.  And I noticed that in several cases the same directory was scanned multiple times, an apparent bug.  NOD32 is treating links to directories as if they were the actual directory. The four paths C:\Documents and Settings\myusername\Documents C:\Documents and Settings\myusername\My Documents