I find dated, but I still really like it. I've been influenced by the fact that every Lauren I've met has been extremely nice. I also just like that family of names Laura, Laurel, Laurence... you get the picture.
My favorite in that family is probably Laurie. Sweet and underused. I don't know if I'd agree with Lauren being dated, just a bit worn from being used so much. I think it's here to stay. Like Elizabeth it's just going to be worn into the ground I think.