“You are not addressing the posts pointing out the problems with the carbon-dating,”
“There is nothing new, as far as I know, which would change the situation. These ideas have been raised previously and none has been shown to have any merit. Many hypotheses, such as contamination, fire changing the results and more dubious assertions have been made, but none has seriously challenged the 1988 dating,” Timothy Jull, a professor in geosciences at the University of Arizona who specializes in carbon dating, told Discovery News.
Indeed, numerous theories, such as a plastic coating built up on the linen by millions of tiny micro-organisms, have been presented to explain how the radiocarbon tests could have been inaccurate. All have been rejected by the scientific community.
In 1998, Ramsey himself tested the possibility that carboxylation of the cellulose in the linen during the 1532 fire could have produced a younger dating, but concluded that “carboxylation is not a systematic source of error in the dating of cellulose-containing materials such as the linen in the Shroud of Turin.”
http://dsc.discovery.com/news/2008/02/28/shroud-of-turin-02.html