I find that very hard to believe.
But it's true. Prior to 12/8/08, the only objection raised on Free Republic regarding Obama's status was concerned with his being born outside the USA -- in Canada or Kenya -- where Stanley Ann Dunham's relative youth would not have conferred American citizenship under the laws then prevailing.
Cynwoody researched the subject and the earliest posting found that challenged Obama's qualifications on the basis of a single citizen parent was on December 8, 2008. And this post was sourced to the Philadelphia Democrat lawyer who was involved in Hillary's campaign.