Cambodia is suffering from two broad problems plaguing Asia. Almost all of the governments are deliberately inflating their currencies in order to keep them cheap against the dollar and thus stimulate exports. That rapid (double-digit) inflation is pushing many goods out of reach of the poor.
The other problem is that China is getting rich. Over the long run, this will be a great thing for everyone. In the short term, however, richer Chinese are competing for things like meat and rice in local markets. Several Asian nations have banned the export of rice in order to counteract that pressure, but this is stopgap at best--in the short run, you may may rice cheaper locally, but in the long run, you've hurt local farmers, and the rice will probably leak across the border anyway. Vietnam is basically built like a noodle--few farmers are too far from the border to bring their crop somewhere else.
This article available online at:
http://www.theatlantic.com/business/archive/2008/08/department-of-unfortunately-leading-indicators/4035/
