Kellogg is asking stores to hold off on selling some of its peanut butter crackers. The precautionary measure comes after one of its suppliers became associated with the salmonella outbreak. The hold involves Keebler and Austin brand peanut products. Kellogg officials say they haven't found any problems, but one of its peanut paste suppliers is the Peanut Corporation of America. That company is the focus of the investigation of the recent salmonella outbreak.