Some shoppers searching for Eggos have found empty freezer shelves and apologetic signs. At the top of the Kellogg's Web site is the message: "Some of your favorite Eggo products are out of stock nationally. We are working hard to fix this short-term issue."
Kellogg said shortages could last until the middle of next year.
"We are working around the clock to restore Eggo store inventories to normal levels as quickly as possible," Charles wrote. "In the meantime, we're allocating available product to customers based on historical percentage of business. We estimate that store freezer inventory shortfalls will continue on Eggo products through the first half of 2010."