Latest reports from Teranet-National Bank Index which showed prices softening slightly over the winter months. I'd say seasonality and "stale" inventory are primary causes in the Calgary market.
http://www.calgaryherald.com/business/real-estate/Calgary+house+prices+decline+November/4170599/story.html
Comments from the Globe about the latest changes to insured mortgage lending and how it will impact the market, along with comments on overall household debt and its implications moving forward.
http://www.theglobeandmail.com/report-on-business/economy/housing/debt-worries-trump-home-sales/article1872727/
Don Campbell expresses his outlooks for 2011, which is bullish in some markets and bearish in others.
http://watch.bnn.ca/squeezeplay/january-2011/squeezeplay-january-5-2011/#clip397203