From the National Highway Traffic Safety Administration: (click the link for full safety bulletin from NHTSA)
"The National Highway Traffic Safety Administration today announced that Dorel Juvenile Group (DJG) is recalling 794,247 child safety seats because the harness locking and release button does not always return to its locked position. A button that is not in the locked position can allow the harness adjustment strap to slip back through the adjuster as a child moves around in the seat and results in a loose harness, increasing the risk of being injured a crash
DJG said the problem involves certain restraint systems manufactured from May 1, 2008, through April 30, 2009, which have a “Center Front Adjuster” (CFA) for the harness. These include infant, convertible, and booster child restraint systems which were sold both as stand-alone seats or part of a travel system (with a stroller).
Click here to view more information from Dorel about the recall, including a complete list of the models being recalled."