As Dixie posted above, of the millions of people that take Hydroxycut on a daily basis, 23is a joke of an error margin. The liver failure is also probably due to a lack of intake of water while on it as well, or an overuse of the product beyond what the manufacturer recommends.
It was not the FDA that recalled the line however, Iovate voluntarily recalled it under the scrutiny of the complaints. As much as I hate MuscleTech and it's holding company, they did the right thing in terms of trying to restore consumer confidence, the media just always blows it way out of proportion.
As far as the ingredient in question beind Garcinia Cambogia, I highly doubt it. The herb is used in many other weight-loss supplements as a craving-reducer since it acts alot like fiber and regulates blood sugar levels. Liver failure can come from any one of the ingredients however, lack of water to faciliate it's transport and effective excrection.