Leucadia National ( LUK) swung to a loss on a continuing operations basis in the fourth quarter. Loss from continued operations was $21.7 million, or 20 cents a share, compared with income from continuing operations of $45.6 million, or 43 cents a share for the previous year. Fourth-quarter revenue rose 130% to $318 million. The company earned $1.64 billion, or $14.27 a share, for the entire year 2005, compared with $145.5 million, or $1.34 a share, a year ago. The company is a diversified holding company engaged in a variety of businesses, including manufacturing, healthcare services, telecommunications, real estate activities, winery operations and residual banking and lending activities that are in run-off.