News roundup — May 6, 2011

Canada

B.C. gives up court fight over class sizes, Victoria Times-Colonist

SCC approves appeal in unions' $30B pension battle, Ottawa Citizen

Blockbuster forced into receivership by Ont. court, The Canadian Press

United States

Calif. court allows ex-smoker to sue cigarette company, Reuters

Judge denies bid to keep Loughner files confidential, Reuters

International

Brazil's supreme court grants rights to gay couples, Reuters

South African security minister's wife convicted for drugs, Reuters