The Mysteries of the Antikythera Mechanism

Is the Antikythera mechanism an artifact from Atlantis?

www.forgottenagesresearch.com/out-of-place-artifacts-series/A-Computer-for-All-Ages-How-Old-is-the-Antikythera.htm, www.world-mysteries.com/sar_4.htm, www.antikythera-mechanism.gr, www.decodingtheheavens.com/Antikythera-at-the-Royal-Institution, Stunning-Antikythera-video, Response-to-criticisms-of-Decoding-the-Heavens,

http://davinciautomata.wordpress.com/2007/08/14/the-antikythera-mechanism-research-project/

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www.forgottenagesresearch.com/out-of-place-artifacts-series

www.abovetopsecret.com/forum/thread582318/pg1

http://thebravenewworldorder.blogspot.com/search/label/alternative%20history

What other things have been lost or suppressed over time?