The world was supposed to end hundreds of times since the year 1.
By the way, I actually researched this a little, and apparently you WILL NOT, I REPEAT, NOT find anything about the mayens (or however you fucking spell that) or 2012/21/2012, or anything else related BEFORE the year 2007!
It is all a big fucking scam for money. To make someone believe something and get money off of it, make up something that "happened" hundreds or thousands of years ago. To get the world scared and make even more money, say naked indians living in sand had psychic powers and knew everything that would happen in the future, and say they cared about the presidents of a country thousands of years in the future, and they would be assassinated, that they had prior knowledge of all the wars, that they knew everything, including when the world would end.