I have a problem with draping hair. No matter how I do it, my character ends up being bald on the forehead. This is what the hair and the guides look like inte the model room:
http://img210.imageshack.us/my.php?image=doc33kp9.jpg

And this is the render result:
http://img186.imageshack.us/my.php?image=doc32km8.jpg

I been following some tutorials on the web. Most of them are excellent in describing the different hair tools in the model room. But I can't find a tutorial or anything about really long hair. Short hair is easier to deal with, it seem stiffer and fluffier somehow and doesn't sink into the skull. But I want long hair, falling backwards over my characters head down on her back. And this is where the problems start.

I thought long basically unstyled hair would be easier to create. Simple make long enough hair, pull it backwards and drape it. Theoretically, the hair should now fall in a realistic way down over her shoulders and back. That also appear to happen with the hair guides. But why oh why does she end up being bald? Do I have too few hairs? Do I have too few guides?

This is how I set up the hair group...and I used a 1024x1024 density map:
http://img210.imageshack.us/my.php?image=doc34un9.jpg

I also tried using fewer segments to make the hair stiffer, as you can see there's only 8 segments per hair guide in my example above. It kind of helps on the sides a little. I also tried increasing the Collision under the Dynamics tab to 2, also being used in the screenshots above. It also kind of helps a little more on the sides.

Increasing the number or hairs or hair guides make virtually no difference at all. Already visible hair get thicker, yes. If I increase the number of hairs to ridicilous values, such as 100,000 I begin to cover her scalp. But the rest of the hair will look very distorted an unnatural, not to mention the render time that will increase vastly.

The only way to cover her scalp is to use the push tool. I could leave it at that but the entire hair get very...big. She starts to look like Al Bundy's wife, Peg. I'm after the long Elven (you know, Legolas and his buddies) kind of hair. Long, straight and backwards.

I get the feeling that I'm doing something fundamentally wrong here. Is there a reccomended setting for draping the hair, not to make it sink into the scalp? Please, oh masters of Carrara, help me out!