i'm thinking the same thing, i was flying though icecrown last night for the first time and i went into a phasing zone and all my boys stopped follow, both when i entered and exited it, i couldn't turn around and see them either they were in like the fog in borean tundra... kinda pissed me off when i came back from smoking and found my pally at the argent dawn place and my shammys still in hte middle of the map.