Cuba suspended plans on Friday for a Communist Party congress and lowered its 2009 economic growth projection nearly a full percentage point as its economy struggled through what President Raúl Castro called a “very serious” crisis, The New York Times reported on an Associated Press story. The gathering was expected to chart Cuba’s political future after Mr. Castro and his brother Fidel are gone. Instead, the nation’s leaders will try to pull their country back from the economic brink.