They were all starsider, and took place... hm... you know, it's all bleeding together. Some before the CU, some after, I think.
Prophets of the Dark side was about one of those spontanious events that the Powers That Be would occasionally trigger. People on either side of the civil war would get a message to get to a certain place, they'd go, stuff would happen.
Not sure how often that particular scenario happened. For all I know it was the only thing they ever did. Does that kind of thing still happen at all?