Historical Volatility

I have been doing some back testing of various EAs in MT4. I have noticed that EAs which rely on market volatility seem to all start to lose money at about 10/2006. The even stranger thing is that this seems to happen on every symbol. It would seem odd that all the volatility went out of the entire forex market all in a month, is this some artifact of the MT4 data? has anybody else noticed the same thing? did this occur in other (non-MT4) data?

I wrote an EA to measure volatility during certain times of day.... a bit off topic, but perhaps useful somehow.

http://www.forexfactory.com/showthread.php?t=62342

You should be check your MT4 - M1 history and get this of LIVE´s accounts, prefer of GOOD Broker.

Best Regards,

Marcelo Marques