Why many Korean actors commit suicides

Philippines
July 17, 2010 9:27pm CST
Why do so many Korean actors commit suicide? Lately one of the famous actor/singer in my recent memory did this horrible thing, his name is Park Yong Ha from the famous Korean Tele Novela "Winter Sonata". Here are the lists of Actors/Actress that have committed suicide: Choi Jin Sil Jun Da Bin Lee Uen Ju U-nee Ahn Jae Hwan Is there a problem with their society? Way of living?