Just picked up this on the airwaves. DDoS 5 1.5 Final has been uploaded on Rapidshare.
http://rs91.rapidshare.com/files/277362145/DoS_5_1_.5_Final.rar
http://www.rapidsharedownload.net/forums/applications/4968-ddos-5-1-5-final.html
Download at your own risk.