[danielmg]

It really depends. I've put someone through a disciplinary before for a really expensive failed change. Not because they made the mistake but because they failed to do any sanity checks before hand or post-imp checks - they just bashed it in and walked away.

I'd never go this route with a geniune mistake as they are life's best lessons. But there is a difference between an honest mistake and a mistake that could have been easily avoided had process been followed.