Has there been changes in monsters AI?

On doing missions, like Ice Caves of Sorrows for example, you used to be able to easily avoid the Mursaat before you got your armor infused. But the monsters AI seems to be different. They seem to react more readily or differently to other monster groups fighting and rush in to assist leaving one with two groups to deal with. Has there been a change in the AI for GW:EN?

it seems like it (not just monster ai). ive definitely noticed a change to healing prayers use and possibly warrior shouts. for some reason the ai sees monk healing spells (not prot) as an excuse to pick it's nose for the majority of an instance whereas prot spells seem to be working as usual. counterintuitivey, restoration magic seems to be working fine. i have also noticed that my koss doesn't use [skill]"none shall pass!"[/skill] like he used to. before, i'd send him in alone and he'd use it as soon as any melee critters ran past him, usually causing them to agro him as soon as they stood back up. i haven't really noticed him use it at all lately. he also uses [skill]"you're all alone!"[/skill] when things are plainly not all alone. i seem to recall him using that more wisely before but that could just be me.