That's one of the points I was making Sichr. There are practically dozens of lost civilizations, reported in mythology and history. A lot of people lump all of that stuff onto Atlantis, because they hear about it the most.
Now, one thing to point out is the concept of drift. As stories are retold, they change slightly over time, until the original tale is lost almost beyond recognition. A small scale example of this would be to get a good size group of people together (say 20 or so) and play Telephone. The first person whispers a message in the ear of the person to their left, and that person repeats it to the person on their left, and so on, until it gets to the last person in the circle, who says whatever they were just told out loud. The result is usually hilarious, and rarely resembles the original message. The same happens in stories, especially oral histories. And even after the story is written, drift still occurs. Even in famous books, you see drift. Look at the Bible, for instance. If you went to Barnes & Noble and picked up a bible off the shelf, I guarantee it would not have the same language as the bible Gutenberg printed. And that is in perhaps the best known book of all time!
The point is that the tale we all have of Atlantis, where the advanced civilization got too arrogant, and were destroyed as their island sank beneath the waves after earthquakes and volcanoes, could easily have drifted from whatever the 'truth' actually is. Moreover, things like dates could have drifted as well.