NSIS Portable Virus?

I'm trying to download NSIS Portable from the official site at the following link:

http://usb.smithtech.us/apps/downloads/NSISPortable.exe

However, my anti-virus software (Avast!) reports it as a virus...

"Win32:Binder-CC [Tool]" - "Other potentially dangerous program" - "080828-0, 28/08/2008".

My understanding is that it is a false positive, however I wanted to let people know so the problem can be resolved.

Thanks.