http://www.thegreatprojects.com/_blog/Blog/post/Beaten_into_submission_/

http://www.orangutans.com.au/Orangutans-Survival-Information/Poaching.aspx

In regions of Kalimantan, poaching of orangutans is prevalent as they are hunted for their meat and skulls. Despite this being illegal, people in certain regions still hunt and consume orangutan meat due to hunger and poverty. With easier access into the orangutan forests today, hunting activities have increased. Besides being consumed as bush meat, orangutan body parts hunted are also illegally added into some medicinal products and their skulls also make it to the underground market where there is a demand for it. Strangely, some orangutan body parts even become tourist souvenirs and they are all sold illegally.

http://www.habitatadvocate.com.au/?p=13652

Being large and slow apes, orangutans become easy targets for hunters. Often when the orangutans are unable to find food in the forests, they undergo environmental stress and find their way to the agricultural areas where they destroy many crops and this angers the farmers. In retaliation, the farmers kill the orangutans to prevent them from destroying or eating the crops.

Hunting is less of an issue than it has been some 15 years ago. The consumption of orangutan meat is also less common in the areas where the local people have converted to Islam, this is due to the religious restrictions on the consumption of meat. However, some 1000 orangutans are still being killed every year due to hunting activities and many orangutans out there await being rescued and rehabilitated.