In 2011, the Polish government passed a new law about recreational psychoactive drugs that provides prosecutors the power to dismiss charges if the amount of drug possessed is deemed low enough to a personal use amount. See http://fakty.interia.pl/polska/news/sejm-znowelizowal-ustawe-o-przeciwdzialaniu-narkomanii-po,1618604 and http://www.heise.de/tp/blogs/8/149586.