I have a sluggish liver, and I've been detoxing it for ten years. I've gone through many healing crises, and I still experience them from time to time.
My point is that detoxing a sluggish liver can take a long time and a lot of hard work. I've learned to accept this as part of my healing process. There are some excellent articles on Curezone which explain the healing crisis quite well.
What supplements do you take? Do you take milk thistle? It helps protect and tone the liver when it's detoxing.