if I changed this function in ProfileCommon to this.
   

public static ProfileCommon GetUserProfile(string username)
        {
            return Create(username) as ProfileCommon;
            //return ((ProfileCommon)(Create(username)));
            //return (ProfileCommon)Create(username);
        }

Profile always null. and doesnt give error.
ProfileCommon Profile = ProfileCommon.GetUserProfile("User1");

simply can we say MySqlProfileProvider is not much usefull ?