Does anyone know why the shelves where the canned pumpkin is supposed to be are dead empty in every grocery store I've been trying lately? It's Fall. I'm ready for some pumpkin bread, or pie, or anything, but I can't find canned pumpkin anywhere, and the clerk said he hadn't been able to get it for months. Does anyone know what's causing it, and will it reappear before Thanksgiving? Because that would be just tragic if it weren't.