I was dx'd last year with Personality Disorder NOS (not otherwise specified) w/avoidant features. In the reading I've done, research by those who deal with personality disorders, indicate that Avoidant PD is not the same as Personality Disorder w/Avoidant Features. How I interpret my dx is that I have a PD, but the traits I exhibit are not as severe as a full-blown Avoidant PD.
I could be wrong, but PC hasn't included PD NOS from the DSM-IV, which is still being used. So, I guess the point of my post is that those of you who are not dx'd yet, but think AvPD sounds like you, I would suggest you get an evaluation done by a qualified professional before you self-diagnose.