4B 018 Beta AI is still having a few problems with starbase defense strategy. First of all, the AI seems to ignore the 1st two Starbase Fortification techs, which are _essential_ to defending your starbases. THe AI pumps up the starbase offense fairly well, but if the defense is still 0, it will be killed by a fleet in the first shot.
I think the AI should prioitize getting 15 defense up quickly for its milityary bases as well as its resources. (I usually put at least 15 or 30 defense - 4 constructors worth - on mine)
Secondly the AI needs to station fleets on its military bases. All that bonus to ships is a waste if you can kill the base first. Currently the AI is sitting a powerful fleet on its planet (Good) but sitting other fleets next to, but not on, military bases. I think the AI should prioritize defense of military bases with the same algorith it uses to defend planets.
Anyway, just wanted to bring this up - seems like it is just a small error somewhere that is making the AI not put a fleet on the base.
Magnifico