I’ve let this one about the new drug laws which took effect January 1, 2010 slip for a while, so to summarize/paraphrase from Český Rozhlaz:
As of January 1, 2010 there is a new drug law which helps to define the new “amounts which are tolerable under the new law”; for example, you can have 15 grams of marijuana, 1.5 grams of heroin, one gram of cocaine and two grams pervitine and be pretty safe in this country.
Apparently, they are being called some of the most lax in the EU.
Update (16/4/2010): “New drugs law fuels confusion over cannabis growing and possession”
“Amid a lot of confusion about what was taking place, Czech law on the possession and growing of drugs changed at the start of the year. The change was more of a far reaching clarification than a fundamental overhaul. Just over 100 days into the new drugs regime, this edition of Panorama tries to gauge what the new law meant for the most popular Czech drug, cannabis or marihuana, and what has been the effect.”