After reading all these posts, am i correct to assume nobody know's where or when he spawns. I've heard from several other places that he spawns just south of Derv 3. But I also heard spawn times of 5 hrs to 2 weeks (real time). Please, if you don't know for sure, don't put the fecking info up. This quest is hard enough as it is :)
If anyone does have guaranteed info, please leave a post. ;p