U.S. markets mainly weak on European economic concerns
The TSX is trading more than 1,800 points, or 13.7%, below where it sat at the start of the year
RIM stock in for bruising session
Resource stocks weakened as commodity prices continued to lose ground
More signals that Europe is sliding towards a recession
Confidence erodes about fix for European debt crisis
Oil, gold prices drop
U.S. Federal Reserve committed to leaving rates near zero until well into 2013
German investor sentiment rises in December
Traders skeptical about EU pact