I felt that I was aware of the possibilities and somewhat versed on what to do/what to expect. I have also been blessed with two children who haven't had any major attachment issues.
The agency we used for our first adoption required a 4 hour "pre-service class." It did not really go into depth on issues you might face. In fact, the issues were sort of glossed over as "Yes, you might face issues, but most of these kids need love and food." But, me being who I am -- I heard the part where they mentioned the issues and took it upon myself to research. I did feel that I was prepared, but my agency was only partially responsible.
Our second agency had a much more in-depth education program. I felt that they gave lots of information about potential issues. Perhaps they swung a little bit the other way.

(Lots of articles on fostering attachment and speech development, but also lots of articles on "diagnoses" like sensory integration disorder, FAS, etc.) If I hadn't already had my DS at home and doing fine, I would have been scared stiff. But I do believe that it's important for families to know that these issues *may* arise with your child.
Kim