Apparently the batteries pose a potential fire hazard due to overheating. None of the batteries in this recall are being used in Apple laptops.
Sony suffered a black eye in 2006 when it was forced to recall thousands of batteries from a long list of laptop manufacturers, including Apple. This time, however, the recall appears to impact a substantially smaller number of computers and companies.
Additional information about the voluntary recall is available at the U.S. Consumer Product Safety Commission Web site.