i store mine in my cabinets usually but i'm out of all things vegan right now. also, we've been having ma jor moth issues with the cabinets :(. I think a lot of vegans out there store their yeast in the refrigerator.
We have this problem too :( Everything is stored in air tight containers in my house, and things that aren't tend to get mothy. It's so absolutely repugnant.
That said, I have 3 jars of nutritional yeast in the cabinet. 2 are mostly empty, one is mostly full. I really need to consolidate...