Another indication, from today's Guardian, that this kind of thing was a lot more widespread and authorised than they are trying to make out Now Reuters reveal three journalists abused in Iraq. (You need to register to get to this part of the paper.)

And here's a story about how the former commander of Guantanamo Bay, General Baccus was sacked because he tried to stop illegal abuse of prisoners General's sacking cleared way for Pentagon to rewrite rules.

With Gen Baccus out of the way the command of Guantanamo Bay was given to Gen Miller, who is now in command of this kind of thing in Iraq:

...Gen Miller was appointed commander. Under his watch, Guantánamo instituted a "72-point matrix for stress and duress", which the Washington Post said set out a guide for the levels of force that could be applied to detainees. These included hooding or keeping prisoners naked for more than 30 days, threatening by dogs, shackling detainees in positions designed to cause pain, and extreme temperatures.