Flight Gear looks very interesting! I was wondering about a feature which I find very appealing; is there any AI/computer generated traffic in this simulator? I find that it adds much needed life to a flight simulator.

The AI stuff in FG is still under development but currently there are two AI schemes.One of the schemes generates GA a/c that, iirc, fly between different airfields. You can change the 'density' of this traffic via the ATC/AI drop-down menu.I believe the other scheme uses 'scenario' files and an AI Manager subsystem that allows scheduled flights to be set-up.I see the GA a/c fairly frequently, when I'm flying low enough, but I'm afraid I can't tell you much more about the scenario/AI Manager stuff as I've not really looked into it. I've just seen folk talking about it on the mailing lists and saw a couple of early test examples at KSFO in earlier cvs versions.