Check out my post at Utah Preppers for some important information for anybody storing Survival Seeds. Mine were sealed in a can with an oxygen absorber and kept relatively cool and definitely dry throughout their storage. They are 9 years old, and I'm planting them this year and have a few results already. Read the report here.
Or if you want the short version: don't store your seeds too long--a few will grow and a bunch of others won't. :) If you're planning on harvesting your own seed, get a reference book on it and start practicing now.