What is your personal drawdown tolerance?

[alexander supertrade]

Just wanted to get an idea of what others consider to be an unacceptable drawdown. To me, when I look at a testing result, anything above ~20% is a deal breaker, however, losing even 20% of your account, I would imagine, would be psychologically traumatizing.. I think I would find it hard to stick with a system as 20% or more of my account is gone. do others feel the same? ..I guess the better question is: what you your personal drawdown tolerance if it were to occur on a real account?