http://www.theregister.co.uk/2013/05/20/canada_welcomes_bitcoin_traders_fintrac_letter/
"The Register has seen a letter from the Financial Transactions and Reports Analysis Centre of Canada (FINTRAC) which was sent to several prominent Bitcoin exchanges in the country, explaining they are exempt from strict money-laundering laws."
An oddly proactive move : looks like 'the government' won't have things so easy after all (thanks to the indefinite article)
The biggest trade on Cavirtex today so far is "May 20, 2013, 04:45:42 116.00000 61.84 " - that is 61.84 BTC at $116 CDN. Most of the day's transactions were each well under 1 BTC.
Not much money to be laundered there! Kind of funny really, imagining all the bureaucrats working themselves into a lather over the potential issue.