I know that there is a thread that indicates that Lee is not the father per the report that was released on 2/18/09. I hate to say what I am about to say, but it does add food for thought:

The documents indicate that Q55 and Q56 did not include DNA or STR typing results. I am not sure what this means, but IMO they did not have an adequate sample of Cindy's DNA.

There is no mention of what happened with George's DNA. I understand that Lee is not the father of Caylee, but why is no comparison to George's DNA indicated in this report?