Steve -
I just encountered this situation, which, while it isn't technically a bug, can potentially be very annoying if it crops up.
I decided to play with 4.4 for a while. I started a new campaign, and decided to do a non-solar system start. After generating the universe I selected the SM Race and opened the system window to begin generating the system for my race. The very first system I generated had a beautiful oxy-nitrogen planet suitable for a race, so I selected that planet and generated my empire. I spent quite a while setting up my empire, and although I almost always do a low-tech start, as that interests me most, I decided to do a fairly high-tech start this time. I spent a fair amount of time upgrading the race's tech levels to where I wanted them, then designed my ship systems, then designed my ships. Finally, I had my race where I wanted and hit the five-day time advance. Aurora advanced an hour and then gave a bunch of thermal contact reports, all on or around my home planet. After a second I realized what had happened. As stated above, the planet was an O/N planet, and apparently Aurora randomly determined that an NPR would be there.
Now, in this case, it isn't a big deal. I decided to go with it, and make it part of my test campaign. However, if this was a "for-real" campaign, where I had a definite idea of how I wanted it to be set up and had spent a lot of time setting it up, this would be a big problem that I would only discover after spending the time to set it up. After thinking about it for a while I realized that I could reduce the NPR generation chance to 0 on the game screen at least while I am generating my initial race, but it also occured to me that it is never a good thing to have an NPR randomly created while generating systems for my initial race. After all, if an NPR is generated in a system I am going to delete it clutters the database and slows the system generation down, and if it is in a system that I'm going to use then it complicates the setup. Is there any way to suppress the generation of NPR's during the initial player race creation?
Kurt