Bâshrat:
First, thanks for the great tool. This is my first post, luckily I think I can help on this. I understand that there's some usage (not sure how much yet) of AutoIT, which I also work on.
I ran into this exact same issue on another AutoIt script I wrote, and it was chewed up by Symantec Antivirus by those same definitions. I was able to fix the problem by updating to the new AutoIt version (dated 5/25/07 I believe?). Specifically, all I did was upgrade, then recompile the original .au3, and then SAV stopped eating the .exe's.
Anyhow, my two cents. I think this would resolve the problem. Thanks again!