None of my knives have broken, even after some abuse, although I'm "mostly" pretty easy on them nowadays.
Only one I can think of off the top of my head is the Kabar USMC (1217). Its a good knife, and can do many things well. However Batoning with one consistently will break it eventually. When they break, its almost always right at the square transition from tang to blade. I've seen maybe... 5-10 of them that have broken in my time here on bladeforums.
Oh, and the original Cold Steel Leatherneck. That was breaking all over the place (from abuse), so they changed its design.
Other than that, I can't say I've seen many systematic failures.
Of course, knives with fine tips get the tips broken by people that pry hard, but that seems to be irrespective of blade type from what I've seen so far (seen BK16's, BK2's, ESEE Izula I&2, Kabar Heavy Bowie, ESEE 6, Cold Steel SRK, etc). So personally I don't count those types of failures as being anything to worry about, as thats not something I do much of, and in many cases the prying was pretty extreme (the BK2's last 1/4in or so of tip broke off trying to break a bolt holding a transfer case skidplate in place that had been warped...).
So yeah, offhand I can only think of those two as ones where lots have happened. Most of the others seem to be the random chance of a HT error, or REALLY extreme abuse.