Just saw this article and thought some one will be interested
http://www.linux.com/article.pl?sid=07/02/07/1930237
(Like many companies, Light Crafts releases its flagship application -- the RAW photo converter LightZone -- for Windows, Mac OS X, and Linux. But although the Windows and OS X versions of LightZone cost hundreds of dollars, the Linux version is absolutely free. It is a lucky break, too, because LightZone is a powerful tool that bests many of its expensive competitors on both quality and ease of use.)