In my game until recently I did no fighting, just building my empire.
I started the plot and came to the point where you have to
I figured my low fight rank might have something to do with it, so I started killing Xenons. Wandering in the vicinity of Belt of Aguilar for some time before that, I noticed a massive Xenon party in Grand Exchange. They've been raiding that sector for more than an hour completely unopposed. Even after I completed the mission part, I felt sorry for the people and stations in that sector so I stayed until I eliminated the last Xenon in the sector.
I think there was a Teladi M1 there at the beginning (I believe Grand Exchange is its home sector), but it soon got wiped out and no RRFs spawned.
In the other thread I reported significant reduction of available generic missions since the 2.0 patch. I wonder if these two are somehow related?