I have noticed since the #3 hotfix if an attack of opportunity goes off sometimes your toon becomes inactive cant walk move or act at all. after the fight sometimes the character continues to be unable to move or act in anyway. made a save file called cant walk so every time it happens i save to it and try to tinker with it to see if i can get the character to move again. so far companions can get back to normal if I kick them from the group but if its the main character nothing seems make them function properly. I think it is the auto stop that happens when you are hit by the AOO as you move that does it the pause that happens seems to be stuck and doesn't end.