Yeah attack nearest and guard me work differently. Attack nearest gives them normal combat AI, while guard me makes them go for whoever is attacking you.
Heh, I just saw a Dances with Worgs buffing an Orc Grunt that was fighting me, and before that I saw a Drow House Guard casting see invis on itself as soon as its target went invisible, and then casting invis purge and dispells right after.
only thing i don't get is why the eriynes (spelled that wrong) devils in the ash mountains cast see invisibility even when i'm invisible long before i get close to them
O heat, dry up my brains! Tears seven times salt
Burn out the sense and virtue of mine eyes!