Kauyoon was terrformed 1,3 billion years ago. Has been settled an left fallow many times and was once even the homeworld to a now extinct sapient species. It became a frozen, depleted wasteland in the Tarseuh-conflict 600 million years ago.
Given to the Gubru as part of a "package deal" by the Intitute for Migration. They also got a richer world in exchange for salvaging Kauyoon. The planet is now being terraformed once again.
Apart from the Gubru the plant is also colonised by their client species, such as the Kwackoo and others.
Sources: GURPS Uplift,