cracked base plates and pre-release issues. i'm 185 lbs and got rid of mine when i had them two years ago.
I haven't had any trouble with my griffons though (besides pulling them off on mute grabs, but now i just do critical grabs instead), so maybe we just put different stresses on our bindings. i also ski east coast and a lot of park.
AR7s are a sick choice too, that must be a really light setup..those are like the lightest bindings you can buy.