Breadmaker, breadmaker, make me some bread

Well, my second loaf in the new breadmaker turned out the same way the first one did: flat, dense, and really hard around the edges (although fairly yummy in the middle). Also, the flour didn't get all mixed in along one end. Hmmm. Wonder if the box of Assorted Bread Mixes I got got too hot or too cold at some point and the yeast isn't quite happy.