Nod detects a new virus....or does it?

I've been using nod32 on the home pc for the past week as I was having issues with my previous av software and gsak. Both avg and ca's free av software do not give you the ability to exclude a directory from realtime scanning (or a lot of other so-called advanced features). This means gsak runs really slow.
I wasn't about to install Nortons or Mcaffee on the pc (despite the pc coming with a free version of Norton (but that is another rant - wants the point of a "free" 90 day version of software? It's not really free as it just encourages the poor sucker to go and buy the full version and think they are covered ok) ) so I downloaded the trial version of nod32. Yes ok this is similar to the free idea I just ranted about, but at least they are upfront in that it really is a trial version.
However, when I tried to download SIW, a system information gathering tool, nod decided it might be a virus as it has been packed with an executable packer. The file has now been submitted for analysis so it will be interesting to see a) how long it takes to come back with an answer and b) what their conclusion is. My gut feeling is that its been flagged due to the exe packing as a lot of virus use this method to try and escape detection.
Incidentally I got the tip off about this software from PC Doctor who really should allow commenting instead of trackbacks!
Update I guess they fixed it as I can download it ok today. Didn't get an email from nod though.