OMG..i was wondering when somebody would write about this! It's terrible! It first became a major problem when in on Imp Island. I would be nonchalantly just walking around then suddenly i get attacked by a earth elemental which is cool but then all of a sudden all the frogs, lava eaters, flooges(really hate these!), and anything else you can think of decide to call their cousins for a killing! The only thing you can do about it is just press "C" after every battle to go between peace and hostile modes. What just really sucks is you don't even get XP for killing them their just freaking annoying ALL the time. The good thing is though, i've noticed, when you switch acts the ones you may have upset in a previous act seem to just forget they hate you.