Scanning exe file for possible virus

Hi

I downloaded a psp filter (exe.)

I right clicked it and selected scan (there’s a small a, the word scan and the file #)

When I do this, a window opens for only a split second. It’s so fast if I had blinked I would have missed it.

Is this normal? Does this mean it’s save to open?

I tried another exe file and it did scan it a bit slower but I still couldn’t see exactly whats going on.

See:

http://forum.avast.com/index.php?topic=10508.msg89567#msg89567

Thank you