Cathay Dragon, Cabin Failed to Pressurize

A Cathay Dragon Airbus A320-200, registration B-HSJ performing flight KA-318 from Hong Kong (China) to Busan (South Korea), was climbing out of Hong Kong when the crew stopped the climb at FL190 reporting a cabin pressurization problem. After working the checklists the crew decided to return to Hong Kong, descended the aircraft to 9000 feet to burn off fuel and landed safely back about 1:40 hours after departure.

Source: http://www.avherald.com/h?article=4aa4a00e&opt=0