Some more Dwarf vs Goblin comedy:
In my current game, I think I went at almost a year (the norm is about two or three sets per year) without ambushes and I know it wasn't pathing issues because I had my dwarves outside working on my outer walls and stuff when three (I think, could have been 2 1/2) ambushes popped up right about the time the caravan came, one on the west area, another which hit my cage traps at the only crossing point over the brook turned stream and another to the east. A couple dwarves and a bunch of animal. Actually, there was a part of the ambush on the caravan, but they took care of that easy.
There was some funny moments though when my mayor kept running around and the goblin liason (yes you heard me right, goblin) kept following (both somehow escaped injury) with the bowgobs chasing and firing away and then chasing after they ran out of arrows/bolts. The funny part was when I activated my mayor to make her get inside, she chased those gobs.
Its like the bowgobs were like "KILL THE DWARF!" and then when she went at them "ACK! DWARF IS ATTACKING, RUN!". Neither the target nor the goblins got killed. It was more comedic than anything.
BTW, the goblin Liason is from a goblin civ that got defeated early on, but it was more of an assimilation rather than destruction. She was alive at the time of the conquest I think, although she may have been wandering the wilds at the time. I checked worldgen info and the two goblin towers involved still have large goblin populations, actually, one has just goblins, the other has a mix of dwarves and goblins plus a few goblins scattered among the mountainhomes. I guess there were alot of noncombatants.
Also, the king of this civ is still around and I'm at war with that guy, he is the only unit for that civ. I guess there are still a few loyal to that civ.