I'm not sure about the quota system, but increasing the number of women in the government in countries like Afghanistan is a good thing.

Feminist Wire Daily Newsbriefs: U.S. and Global News Coverage: "Nearly 600 Afghan women are running for office in the country's first legislative elections since the fall of the Taliban in 2001. In an important step forward for women in Afghanistan, the constitution approved last year reserved 25 percent of the lower parliamentary seats for women, with a similar percentage of seats reserved in the 34 newly forming local councils, reports BBC News."