neutral monsters not attacking

[Grox]

Stronghold guards, the ones in the small pyramid, are not attacking when attacked. 

also since regen is non-existant in any non-lair room, you could conceivably get there at level 1 and kill these 750 exp monsters and level extremely fast.

it also appears sandworms, which ARE supposed to be hostile, aren't attacking either.(same mod.)

[The Crazy Animal]

hmm

[Krusty]

a buncha different monsters do this.  But if you try to run, it triggers something (or pisses them off) and everything attacks like normal.
For example, A the leader and B the follower are looping.  A moves, monster spawns just before he moves and B engages.  Well in the next room A and B attack monster and monster (that followed into the next room) attacks back.  If there were other monsters in the room, they also would attack normally.

Maybe this could help isolate the issue?  I know this holds true out in the pyramid