The latest McAfee VirusScan builds are reporting that nnbackup.exe is infected by 'New Poly Win32' virus. This is a false alarm - there are no viruses in our programs.
I strongly suggest to McAfee VirusScan users to drop a line to a McAfee VirusScan developers, repoting the false alarm and giving them an URL of nnBackup distribution - so they can fix this problem.