Here's a rapid-fire summary of what's caused the carnage in this group recently. Two weeks ago today, Wendy's (NYSE: WEN) reduced its current-year earnings estimates by a few pennies. Then, this week, McDonald's (NYSE: MCD) rocked the financial markets with news that it will report its first-ever quarterly loss next month. Following suit, yesterday, Jack in the Box (NYSE: JBX) reduced its full-year earnings guidance for 2003 by nearly 20%. One notable exception comes from Yum! Brands (NYSE: YUM) -- operator of Taco Bell, KFC, and Pizza Hut -- who last week reconfirmed its guidance for both 2002 and 2003.