No I mean.. The Androsynth got "taken care of" because they found out too much about the Orz, managed to "see" into their dimension and their true form, due to the experiments they were doing on their homeworld.
The scientist you send out to explore the research centers there goes mad, and possibly gets somehow attacked when he tries to find out more about it as well. He started cutting himself, and when they restrained him and brought back to the ship the cuts seemed to be just getting bigger. (it didnt give further info after that about what happened to him)
I'll probably play SC3 again to catch up with this again soon, I actually liked the story in that game too for the most part, gave great additional backgrounds when talking to the races from your home quadrant