Dreaming about the living dead may carry a powerful message. If you are "walking around like a zombie," it usually means that you are emotionally disconnected from things going on around you. You may be experiencing unhealthy detachment and are unable to appropriately feel positive or negative emotions. Currently, you may be out of touch and outside of the main flow of life. This dream could positively sever you and help you to become aware of emotional issues and circumstances in daily life that are difficult to face.
To dream of zombies (at least in their flesh-eating guise as depicted in modern horror) suggests a fear of society, or of losing one''s individuality to pressures of conformity. It could also represent a general feeling of misanthropy on the part of the dreamer.
To dream that you are attacked by zombies, indicates that you are feeling overwhelmed by forces beyond your control. You are under tremendous stress in your waking life.