Lindsay Davenport has withdrawn her name from the entry list of the 2008 French Open. I do not know the reason she gave, but the move itself is hardly a surprise. Clay is Davenport's weakest surface, and--considering her short-term return to the tour--there is no reason for her to play in Paris.
Sania Mirza has also withdrawn. She has not recovered from her wrist surgery. Tatiana Golovin, Li Na and Eleni Daniilidou had already withdrawn because of injuries and surgeries, and Daniela Hantuchova is expected to withdraw.
All of these withdrawals are sad, but the most meaningful one, in my opinion, is that of Golovin, for she is the clay specialist among the group.