However,...
...IMO, torture has always been deeds that leave physical scars...severe beatings, broken bones,burns, cuts, fingernails, etc..
Waterboarding is torture, IMO, but it's psychological.
What I wouldn't necessarily like to see is waterboarding being the STANDARD method of interrogation of suspected insurgents.
Used in proper context, it's a valuable tool to use in order to save lives, but let's face it...the jerks who were involved in the Abu Graib fiasco, shouldn't have our blessing to waterboard prisoners for their amusement.
See, that is the problem. When you set a policy, that policy is going to be abused. That is why setting policy is such a tricky business.