Not all children with advanced verbal skills early on have Asperger's. I wouldn't worry about that unless my child was showing other signs. My youngest, for instance, was saying a few words (and combining a two of them) at 5.5 months old. She'll be 10 here in a month and I am quite certain that the highly socially aware person she is does not have Asperger's.

Study Strategies for Accelerated Learners