By training I mean refining your algos. I make them better all the time, and improve the speed to. My bot is now multi-threaded and reacts in 3 seconds, with a giant database to store the history.
Speaking of bitcoin charts not beign reliable... the site went down for a little bit today lol.
What language did you write your bot in?
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The performance data listed previously was over this range:
http://bitcoincharts.com/charts/mtgoxUSD#rg30zczsg2011-06-18zeg2011-07-11zvztgSzm1g10zm2g25