Concerns about salmonella contamination.They've been sold under the Ralphs and Albertsons brands, as well as Lucerne, Mountain Dairy, Boomsma's, Sunshine, Hillandale, Trafficanda, Farm Fresh, Shoreland, Lund, Dutch Farms and Kemps. Apparently there have been some illnesses related to the outbreak.From the OC Register:
The eggs are packed in a variety of carton sizes, from 6, 12 and 18. The cartons carry "plant" numbers P1026, P1413 and P1946, followed by "Julian" dates ranging from 136 to 225. The stamps are found on the end of the egg carton.